Overview
Key Facts & Overview
Quick Summary
Lancinating pain, also known as sharp shooting pain or neuralgia, is a type of nerve pain characterized by sudden, severe, electric shock-like sensations that come in brief episodes. Unlike ordinary pain, lancinating pain results from dysfunction or damage to the nervous system itself, making it particularly intense and often debilitating. Common causes include nerve compression (sciatica, carpal tunnel), diabetes, infections (shingles), and facial nerve disorders (trigeminal neuralgia). At Healers Clinic Dubai, we treat lancinating pain through our integrative approach, combining conventional pain management with constitutional homeopathy, Ayurvedic therapies, targeted physiotherapy, and IV nutrition to address both symptoms and root causes. Seek evaluation for any new or worsening shooting pain, especially if accompanied by weakness, numbness, or bowel/bladder changes.
Definition & Terminology
Formal Definition
Etymology & Origins
The term "lancinating" derives from the Latin word "lancea" (a Roman light spear or lance), implying a piercing, stabbing sensation. "Neuralgia" combines the Greek "neuron" (nerve) and "algos" (pain), literally meaning "nerve pain." The term "trigeminal neuralgia" specifically refers to pain in the trigeminal nerve (the fifth cranial nerve), while "sciatica" refers to pain along the sciatic nerve, derived from the Greek "iskhiadikos" meaning "relating to the hip."
Anatomy & Body Systems
Affected Body Systems
- Peripheral Nervous System: All nerves outside brain and spinal cord
- Central Nervous System: Brain and spinal cord
- Somatic Nervous System: Voluntary movement and sensation
- Autonomic Nervous System: Involuntary functions (may be affected)
- Musculoskeletal System: Muscles and bones where nerves travel
- Cardiovascular System: Blood supply to nerves
System Interconnections: The nervous system is divided into the central nervous system (CNS - brain and spinal cord) and peripheral nervous system (PNS - all other nerves). Pain signals travel from peripheral nerve receptors through the spinal cord to the brain. When nerves are damaged or compressed, they can send abnormal pain signals even without stimulation, causing lancinating pain. The myelin sheath that surrounds many nerves is crucial for rapid signal transmission; demyelination leads to aberrant pain signaling.
Healers Clinic Integrative View: At Healers Clinic, we recognize that lancinating pain often reflects broader systemic imbalances. Our NLS Screening assesses functional disturbances in the body's energetic systems and nerve conduction patterns. Ayurvedic evaluation considers Vata dosha (governing nervous system function), Majja Dhatu (bone marrow and nervous tissue), and the health of Srotas (channels). Homeopathic constitutional assessment addresses underlying susceptibility to nerve pain.
Key Anatomical Structures
| Structure | Description | Function | Relevance to Lancinating Pain |
|---|---|---|---|
| Peripheral Nerves | Nerves outside CNS | Transmit signals to/from CNS | Primary site of compression/damage |
| Nerve Root | Entry point to spinal cord | Connects PNS to CNS | Compression causes radicular pain |
| Myelin Sheath | Fatty covering on nerves | Speeds signal transmission | Damage causes abnormal signaling |
| Dorsal Root Ganglion | Nerve cell cluster | Contains pain receptors | Source of neuropathic pain |
| Trigeminal Nerve | Fifth cranial nerve | Facial sensation | Causes facial lancinating pain |
| Sciatic Nerve | Largest nerve in body | Leg movement/sensation | Compression causes leg/buttock pain |
Physiological Mechanism
Normal Nerve Function: Nerves transmit electrical signals through specialized cells called neurons. Signal transmission relies on ion channels, neurotransmitters, and the myelin sheath. When you touch something hot, specialized receptors send signals through peripheral nerves to the spinal cord and brain, where the sensation of pain is processed.
Pathophysiology of Lancinating Pain: Lancinating pain occurs through several mechanisms:
- Nerve Compression: Herniated discs, tumors, or structural abnormalities put pressure on nerves
- Demyelination: Damage to the myelin sheath disrupts normal signal transmission
- Nerve Damage: Diabetes, infections, or trauma injure nerve fibers
- Ectopic Discharge: Damaged nerves generate spontaneous pain signals
- Central Sensitization: The spinal cord and brain become hyperresponsive to pain signals
- Ion Channel Dysfunction: Abnormal sodium or calcium channels cause hyperexcitability
Types & Classifications
Primary Categories
By Location:
- Peripheral Neuropathic Pain: Affects nerves in extremities (hands, feet, arms, legs)
- Cranial Neuralgia: Affects head/cranial nerves (trigeminal, glossopharyngeal)
- Radicular Pain: Pain along nerve root from spine
- Central Pain: Originates from brain or spinal cord
By Duration:
- Acute Lancinating Pain: Less than 3 months, often from identifiable cause
- Chronic Lancinating Pain: More than 3 months, may persist without clear cause
By Severity:
- Mild: Brief episodes, minimal impact on daily life
- Moderate: Frequent episodes, some activity limitation
- Severe: Constant or very frequent episodes, significant disability
Subtypes by Etiology
- Trigeminal Neuralgia: Affects face, often triggered by touch or chewing
- Glossopharyngeal Neuralgia: Throat and ear pain, triggered by swallowing
- Occipital Neuralgia: Back of head and neck pain
- Sciatica: Pain along sciatic nerve (buttocks to foot)
- Cervical Radiculopathy: Neck to arm pain
- Lumbar Radiculopathy: Lower back to leg pain
- Diabetic Neuropathy: Nerve damage from diabetes
- Postherpetic Neuralgia: Pain after shingles
- Carpal Tunnel Syndrome: Wrist/hand pain and numbness
- Complex Regional Pain Syndrome: Chronic pain after injury
Causes & Root Factors
Primary Causes
-
Nerve Compression
- Herniated or bulging spinal discs
- Spinal stenosis (narrowing of spinal canal)
- Bone spurs
- Tumors or cysts
- Piriformis syndrome (buttock muscle compressing sciatic nerve)
- Carpal tunnel (wrist nerve compression)
-
Metabolic Disorders
- Diabetes mellitus (diabetic neuropathy)
- Vitamin B12 deficiency
- Vitamin B1 (thiamine) deficiency
- Thyroid dysfunction
-
Infectious Causes
- Shingles (herpes zoster) - postherpetic neuralgia
- Lyme disease
- HIV
- Hepatitis
-
Traumatic Causes
- Nerve injuries
- Post-surgical pain
- Whiplash
- Fractures
-
Autoimmune/Inflammatory
- Multiple sclerosis
- Rheumatoid arthritis
- Lupus
- Guillain-Barre syndrome
-
Idiopathic
- No identifiable cause (approximately 20-30% of cases)
Secondary Causes
- Age-Related Changes: Degenerative spine changes
- Lifestyle Factors: Sedentary behavior, poor posture
- Occupational: Repetitive motions, prolonged sitting
- Nutritional Deficiencies: Processed food diet, limited sun exposure
- Stress: Chronic stress affects nervous system function
- Smoking: Impairs blood flow to nerves
- Alcohol: Toxic to peripheral nerves
Healers Clinic Root Cause Perspective
At Healers Clinic, we believe lancinating pain often stems from multiple interconnected factors:
Ayurvedic perspective: Vata dosha imbalance causing dryness and irritability in nervous tissue; Majja Dhatu (bone marrow/nervous tissue) weakness; Ama (toxins) blocking Srotas (channels); impaired Prana Vata affecting nerve function; aggravated Sadhaka Pitta affecting nervous system; weakened Vyana Vata affecting circulation to nerves.
Homeopathic perspective: Constitutional weakness, miasmatic predisposition (especially sycotic and psoric miasms), suppressed emotions manifesting as nerve symptoms, inherited tendency toward neuralgic conditions, susceptibility amplified by stress or trauma.
Physiotherapy perspective: Muscle imbalances causing nerve compression; postural dysfunction; reduced mobility; scar tissue affecting nerve glide; ergonomic issues; weakness of stabilizing muscles.
Naturopathic perspective: Nutritional deficiencies (B vitamins, magnesium, omega-3); systemic inflammation; blood sugar dysregulation; gut health issues affecting nutrient absorption; pH imbalance; oxidative stress affecting nerves.
Our integrative approach addresses all these root factors simultaneously through our comprehensive assessment and personalized treatment protocols.
Risk Factors
Non-Modifiable Factors
- Age: Risk increases significantly after age 50
- Gender: Women more commonly affected by trigeminal neuralgia
- Family History: Some neuralgias have genetic predisposition
- Previous Illness: History of shingles, diabetes, or autoimmune conditions
- Previous Trauma: Nerve injuries from accidents or surgery
Modifiable Factors
- Blood Sugar Control: Diabetes management
- Posture: Ergonomic improvements
- Physical Activity: Regular exercise and movement
- Nutrition: Adequate B vitamins, magnesium, omega-3
- Stress Management: Relaxation techniques
- Smoking Cessation: Improves nerve health
- Alcohol Reduction: Limits nerve toxicity
Risk Assessment at Healers Clinic
Our comprehensive assessment identifies your specific risk profile through:
- Detailed history including family history and lifestyle
- Physical examination assessing nerve function and musculoskeletal status
- Laboratory testing for metabolic markers and nutritional status
- NLS Screening for bioenergetic assessment
- Constitutional analysis (Ayurvedic and homeopathic)
- Postural and ergonomic evaluation
Signs & Characteristics
Characteristic Features
Lancinating pain manifests with distinct characteristics:
- Quality: Sharp, stabbing, shooting, electric shock-like, lightning bolt
- Timing: Often sudden onset, brief episodes (seconds), may be episodic or constant
- Location: Follows specific nerve distribution patterns
- Aggravating Factors: Touch, movement, chewing, temperature changes, stress
- Relieving Factors: Rest, specific positions, medications
- Associated Symptoms: Numbness, tingling, burning, weakness, muscle atrophy
Specific Patterns
- Trigeminal Neuralgia Pattern: Pain in face, jaw, teeth, triggered by light touch, chewing, speaking
- Sciatica Pattern: Pain from lower back through buttocks down leg, worse with sitting, coughing, sneezing
- Cervical Radiculopathy Pattern: Neck pain radiating to shoulder/arm/hand, worse with neck positions
- Peripheral Neuropathy Pattern: Symmetric pain/numbness in hands/feet, "stocking and glove" distribution
Warning Signs Requiring Prompt Evaluation
- Sudden severe headache (possible aneurysm)
- Weakness or paralysis with pain
- Bowel or bladder dysfunction with pain
- Unexplained weight loss with pain
- History of cancer with new pain
- Pain not responding to treatment
- Pain with fever
- Pain after recent infection
Associated Symptoms
Commonly Associated Symptoms
- Numbness: Loss of sensation in nerve distribution
- Tingling/Pins and Needles: Paresthesia
- Burning Pain: Often accompanies shooting pain
- Muscle Weakness: Due to nerve involvement
- Muscle Atrophy: Long-term weakness
- Allodynia: Pain from normally non-painful stimuli
- Hyperalgesia: Increased sensitivity to painful stimuli
- Headache: Especially with cervical or cranial involvement
Systemic Connections
At Healers Clinic, we recognize that lancinating pain often connects to:
- Endocrine System: Diabetes, thyroid function affecting nerve health
- Immune System: Autoimmune conditions attacking nerves
- Digestive System: Nutrient absorption affecting nerve function
- Musculoskeletal System: Structural issues causing nerve compression
- Psychological State: Depression and anxiety comorbid with chronic pain
- Cardiovascular System: Circulation affecting nerve nutrition
Clinical Assessment
Healers Clinic Assessment Process
Initial Consultation (45-60 minutes):
- Detailed history of present complaint including pain characteristics
- Review of medical records and previous treatments
- Occupation and lifestyle assessment
- Sleep and stress evaluation
- Dietary assessment
- Family history
- Medication review
Physical Examination:
- Neurological examination including sensation testing
- Motor strength assessment
- Reflex testing
- Range of motion assessment
- Postural assessment
- Specific nerve tests (Tinel's sign, straight leg raise, etc.)
Ayurvedic Assessment:
- Dosha evaluation (Vata, Pitta, Kapha)
- Prakriti (constitution) analysis
- Dhatu (tissue) assessment - particularly Majja Dhatu
- Srotas (channel) evaluation
- Nadi Pariksha (pulse diagnosis)
- Assessment of Prana (life force)
Homeopathic Assessment:
- Constitutional type determination
- Miasmatic analysis
- Symptom totality evaluation including modalities
- Assessment of inherited tendencies
- Emotional/mental symptoms
What to Expect at Your Visit
- Warm welcome at Healers Clinic in Jumeira 2, Dubai
- Comprehensive consultation with our specialist
- Thorough neurological and physical examination
- Integrative assessment combining multiple perspectives
- Personalized treatment plan addressing root causes
- Education about your condition and self-care strategies
Diagnostics
Laboratory Testing
- Complete Blood Count: Rule out infection, anemia
- Fasting Blood Glucose / HbA1c: Screen for diabetes
- Vitamin B12: Deficiency can cause neuropathy
- Folate: Deficiency may contribute
- Thyroid Function: Hypothyroidism can cause neuropathy
- Rheumatoid Factor: Inflammatory conditions
- ESR/CRP: Inflammatory markers
- Vitamin D: Deficiency associated with chronic pain
Imaging Studies
| Test | Purpose | Indication |
|---|---|---|
| X-ray | Assess bones, joints, degeneration | Initial evaluation, arthritis |
| MRI | Detailed soft tissue, disc, nerve root | Suspected disc herniation, spinal stenosis, tumors |
| CT Scan | Bone detail, disc visualization | When MRI not suitable, bone issues |
| EMG/NCS | Nerve and muscle electrical function | Confirm neuropathy, localize damage |
Specialized Diagnostics
- NLS Screening (Service 2.1): Bioenergetic assessment of nervous system function
- Quantitative Sensory Testing: Measure sensory thresholds
- Ayurvedic Pulse Diagnosis: Traditional dosha evaluation
- Homeopathic Constitutional Analysis: Remedy selection
- Thermal Imaging: Detect areas of inflammation/nerve dysfunction
Differential Diagnosis
Similar Conditions
| Condition | Key Feature | Diagnostic Clue |
|---|---|---|
| Trigeminal Neuralgia | Face pain, trigger zones | MRI shows vessel compression |
| Sciatica | Leg pain, straight leg raise positive | MRI shows disc herniation |
| Diabetic Neuropathy | Numbness, symmetric | Elevated blood sugar, B12 deficiency |
| Postherpetic Neuralgia | History of shingles | Shingles rash history |
| Multiple Sclerosis | Multiple neurological symptoms | MRI brain lesions |
| Carpal Tunnel | Hand numbness/tingling | Nerve conduction study |
| Cluster Headache | Severe head pain, autonomic symptoms | Pattern of attacks |
Healers Clinic Diagnostic Approach
We differentiate conditions through:
- Detailed history and symptom analysis
- Comprehensive neurological examination
- Laboratory testing
- Advanced imaging when indicated
- Electrodiagnostic studies
- Integrative assessment combining multiple perspectives
- Collaboration with specialists when needed
Conventional Treatments
Treatment Approaches
- Treat Underlying Cause: Address the root condition (diabetes, compression, infection)
- Pain Management: Medications targeting nerve pain
- Physical Therapy: Exercise and rehabilitation
- Interventional Procedures: Injections, radiofrequency ablation
- Surgery: If needed for structural compression
Medications
First-Line for Neuropathic Pain:
- Gabapentin
- Pregabalin
- Amitriptyline
- Duloxetine
Second-Line:
- Tramadol
- Oxycodone (for severe pain)
- Topical medications (lidocaine, capsaicin)
For Specific Conditions:
- Trigeminal Neuralgia: Carbamazepine, oxcarbazepine
- Muscle relaxants: For associated muscle spasm
Procedures
- Nerve Blocks: Local anesthetic injections
- Radiofrequency Ablation: Heat treatment for nerve pain
- Spinal Cord Stimulation: For refractory cases
- Surgical Decompression: For structural causes
Integrative Treatments
Homeopathy (Services 3.1-3.6)
Our homeopathic physicians select remedies based on your constitutional type and symptom totality:
Key Remedies for Lancinating Pain:
- Kalmia latifolia: Sharp shooting pains, worse from motion, from above downward
- Spigelia: Left-sided neuralgia, especially trigeminal, with sharp stitching pains
- Verbascum: Coughing, laughing triggers facial pain, left-sided
- Magnesia phosphorica: Right-sided neuralgia, relieved by warmth, cramping pain
- Colocynthis: Severe neuralgic pains, better from pressure, doubled-up position
- Chamomilla: Intolerable pain, oversensitive, anger-triggered
- Hypericum: Nerve injuries, shooting pains along nerves, after trauma
- Cedron: Periodic neuralgias, left side, worse before storms
Ayurveda (Services 4.1-4.6)
Ayurvedic treatments restore dosha balance and heal nervous tissue:
Therapies:
- Abhyanga: Therapeutic oil massage with Vata-pacifying oils (Mahanarayan, Sesame)
- Shiroabhyanga: Head massage for cranial neuralgia
- Shirodhara: Continuous oil stream for head for calming nervous system
- Basti: Medicated enema for Vata pacification and nerve nutrition
- Nasya: Nasal administration for head/neck pain
- Panchakarma: Detoxification therapies
Herbal Medications:
- Ashwagandha (Withania somnifera): Nerve nourishment
- Brahmi (Bacopa monnieri): Cognitive and nerve function
- Rasnadi Churna: External application for pain
- Yastimadhu (Licorice): Soothing, anti-inflammatory
- Guggulu (Commiphora mukul): Inflammation, nerve health
Lifestyle:
- Regular routine (Dinacharya)
- Stress management (yoga, meditation)
- Vata-pacifying diet
Physiotherapy (Services 5.1-5.6)
Our physiotherapists provide:
- Nerve Gliding Exercises: Improve nerve mobility
- Stretching: Tight muscle release
- Strengthening: Stabilizing muscles
- Postural Correction: Reduce nerve compression
- Manual Therapy: Joint and soft tissue mobilization
- Modalities: Heat, TENS, ultrasound for pain relief
- Ergonomic Assessment: Workplace modifications
- Traction: For cervical or lumbar radiculopathy
Additional Support
- IV Nutrition (Service 6.2): B-vitamin infusions, magnesium for nerve health
- Pain Management (Service 6.5): Holistic pain relief approaches
- NLS Screening (Service 2.1): Bioenergetic assessment
- Lab Testing (Service 2.2): Comprehensive metabolic and nutritional assessment
Self Care
Lifestyle Modifications
- Maintain Good Posture: Especially for desk work
- Regular Movement: Avoid prolonged sitting
- Ergonomic Setup: Monitor, keyboard, chair positioning
- Stress Management: Meditation, deep breathing, yoga
- Adequate Sleep: Support nerve repair
- Quit Smoking: Improves circulation
- Limit Alcohol: Reduces nerve toxicity
Home Treatments
- Warm Compresses: For muscle-related nerve pain
- Cold Packs: For acute pain relief (15 minutes on/off)
- Gentle Stretching: Daily nerve mobility exercises
- Turmeric/Ginger Tea: Anti-inflammatory
- Omega-3 Fatty Acids: Fish oil for nerve health
- Vitamin B Complex: Support nerve function
- Magnesium: May help with nerve pain
Self-Monitoring Guidelines
Track your symptoms:
- Pain level throughout the day
- Activities that trigger or relieve pain
- Sleep quality
- Stress levels
- Any new symptoms
- Medication effects
Prevention
Primary Prevention
- Maintain Healthy Blood Sugar: Prevent diabetic neuropathy
- Good Posture: Reduce spinal nerve compression
- Regular Exercise: Maintain nerve and muscle health
- Adequate Nutrition: B vitamins, magnesium, omega-3
- Vaccination: Shingles vaccine for at-risk individuals
- Ergonomic Workstation: Prevent repetitive strain
Secondary Prevention
- Early Intervention: Address pain before it becomes chronic
- Proper Treatment: Follow through with treatment plans
- Strengthening: Build supporting muscles
- Stress Management: Reduce pain amplification
Healers Clinic Preventive Approach
Our preventive program includes:
- Regular check-ups and assessments
- Personalized exercise programs
- Nutritional guidance
- Annual NLS screening
- Constitutional maintenance (Ayurvedic and homeopathic)
- Stress management techniques
When to Seek Help
Red Flags Requiring Prompt Attention
Seek evaluation for:
- New or worsening lancinating pain
- Pain with weakness or paralysis
- Pain with bowel/bladder changes
- Pain after recent infection
- Pain not responding to initial treatment
- Severe pain affecting daily activities
- Pain with unexplained weight loss
- History of cancer with new pain
Schedule Appointment
- New or changing nerve pain
- Pain affecting sleep or daily activities
- Concerns about nerve health
- Need for integrative treatment approach
- Interest in natural pain management options
How to Book Your Consultation
📞 Phone: +971 56 274 1787 🌐 Online: https://healers.clinic/booking/ 📍 Location: St. 15, Al Wasl Road, Jumeira 2, Dubai
Prognosis
Expected Course
- Nerve Compression (sciatica, carpal tunnel): Good prognosis with treatment, often improves in weeks to months
- Diabetic Neuropathy: Depends on sugar control, progressive without management
- Trigeminal Neuralgia: Good with medications or procedures, may recur
- Postherpetic Neuralgia: Variable, may persist for months to years
- Idiopathic Neuralgia: May respond well to integrative treatment
Recovery Timeline
- Acute conditions: Weeks to months
- Chronic conditions: Months to years, ongoing management
- Many achieve significant improvement with comprehensive care within 4-12 weeks
Healers Clinic Success Indicators
Success at Healers Clinic is measured by:
- Reduced pain frequency and severity
- Improved function and mobility
- Better quality of sleep
- Decreased medication dependence
- Improved overall well-being
Our 75% improvement rate reflects our comprehensive integrative approach.
FAQ
Common Patient Questions
Q: What causes sharp shooting pain? A: Sharp shooting pain (lancinating pain) is caused by damage or dysfunction in the nervous system. Common causes include nerve compression (herniated disc, carpal tunnel), diabetes, infections (shingles), and trauma. The pain occurs when nerves send abnormal pain signals to the brain.
Q: How is lancinating pain different from regular pain? A: Unlike ordinary pain from tissue injury, lancinating pain originates from the nerves themselves. It's typically sharper, more sudden, and follows specific nerve pathways. It often doesn't respond well to standard pain relievers and requires specific neuropathic pain medications or other targeted treatments.
Q: Can stress cause lancinating pain? A: Stress doesn't directly cause lancinating pain but can exacerbate it. Chronic stress affects the nervous system and can lower pain thresholds. Stress management is an important part of treatment for chronic pain conditions.
Q: Is lancinating pain curable? A: This depends on the cause. Some conditions causing lancinating pain are curable (herniated disc with treatment, vitamin deficiency with supplementation). Others require ongoing management (diabetic neuropathy, trigeminal neuralgia). Early intervention improves outcomes.
Q: What helps nerve pain at night? A: For nighttime nerve pain, consider: proper sleeping position, supportive mattress/pillow, warm baths before bed, prescribed medications taken as directed, stress management, avoiding caffeine/alcohol before sleep. Consult your healthcare provider for persistent nighttime pain.
Q: Can I exercise with lancinating pain? A: Exercise can help or worsen depending on the cause. Low-impact exercises like walking, swimming, and gentle stretching are generally beneficial. However, you should avoid exercises that trigger or worsen your pain. Our physiotherapists can design a safe exercise program for you.
Healers Clinic FAQs
Q: What makes your approach different? A: We identify and treat the root cause through comprehensive integrative assessment, combining conventional diagnostics with traditional medicine. Our approach addresses symptoms while also treating underlying imbalances using homeopathy, Ayurveda, nutrition, and physiotherapy.
Q: Do you offer natural treatments for nerve pain? A: Yes, we combine conventional and traditional approaches including constitutional homeopathy, Ayurvedic therapies, targeted nutrition, physiotherapy, and IV nutrient therapy. Many patients benefit from our integrative approach when conventional treatments alone haven't provided relief.
Q: How long will treatment take? A: This varies significantly by condition and individual. Some patients improve within weeks, while chronic conditions may require several months of treatment. We provide ongoing assessment and adjust treatment plans as needed.
Myth vs Fact
Myth: "All nerve pain is the same." Fact: There are many types of nerve pain with different causes and treatments. Trigeminal neuralgia, sciatica, and diabetic neuropathy all require different approaches.
Myth: "Nerve pain cannot be helped." Fact: While some nerve pain can be challenging, many patients experience significant improvement with proper diagnosis and comprehensive treatment.
Myth: "If I stop feeling pain, the nerve has healed." Fact: Not necessarily. Numbness can indicate nerve damage rather than healing. Pain and numbness may both be present simultaneously in nerve disorders.
Myth: "Surgery is the only option for nerve compression." Fact: Many patients improve with conservative treatments including physiotherapy, medications, and integrative therapies. Surgery is reserved for cases not responding to conservative care.