At a glance
What it is
Episodic vasospasm of the digital (and sometimes other peripheral) arteries in response to cold or stress. The arteries transiently narrow, severely restricting blood flow and causing the characteristic colour sequence. Primary Raynaud's is idiopathic and usually mild; secondary Raynaud's occurs in the context of connective tissue disease (scleroderma, lupus, Sjögren's, rheumatoid arthritis), arterial disease, or medication use, and is more severe and more likely to cause tissue damage.
Symptoms
Episodes triggered by cold exposure or stress: affected fingers/toes first turn white (blanching from vasospasm), then blue (cyanosis from deoxygenated blood pooling), then red (reactive hyperaemia as circulation returns). Numbness, tingling, or burning pain during and after episodes. Episodes typically last minutes and resolve with rewarming. Nose, lips, ears, and nipples can also be affected. In secondary Raynaud's: digital ulcers (painful, slow-healing sores at fingertips) indicate severe ischaemia.
Approach
Avoidance: keeping warm (layering, gloves, hand warmers), avoiding cold triggers and vasoconstrictive medications (sympathomimetics, beta-blockers, ergotamine). Pharmacological: calcium channel blockers (nifedipine, amlodipine) are first-line vasodilators; phosphodiesterase inhibitors (sildenafil) for severe or refractory cases; prostacyclin infusion for digital ulcers. Botox injection into the hand: effective for refractory vasospasm and digital ulcer healing. Sympathectomy (surgical or chemical) for severe refractory cases.
What Raynaud's disease is
In healthy individuals, cold exposure causes mild, generalised peripheral vasoconstriction to conserve core body temperature. In Raynaud's, this reflex is massively amplified in the digital arteries — a vasospasm that essentially shuts off blood flow to the affected digits. The sympathetic nervous system, local vascular hyperreactivity, and abnormal release of vasoactive substances (endothelin, serotonin) all contribute.
**Primary vs secondary Raynaud's**
*Primary Raynaud's disease* (idiopathic) — accounts for about 80% of cases. Young women (15–30 years) are most commonly affected. Episodes are triggered by cold or stress; no underlying condition is identified; tissue damage does not occur. Often improves or resolves spontaneously with time.
*Secondary Raynaud's phenomenon* — associated with an underlying disease or cause. More common after age 40. Symptoms tend to be more severe and more likely to cause ischaemic complications (digital ulcers, gangrene). Key associated conditions: - *Scleroderma (systemic sclerosis):* the strongest association; Raynaud's is often the first manifestation of scleroderma and occurs in > 90% of patients - *Other connective tissue diseases:* systemic lupus erythematosus, Sjögren's syndrome, rheumatoid arthritis, mixed connective tissue disease - *Arterial disease:* peripheral artery disease, thromboangiitis obliterans - *Vibration-induced:* jackhammer operators, pianists, and others with repetitive hand vibration - *Medications:* beta-blockers, migraine medications (ergotamine, sumatriptan), chemotherapy agents, amphetamines, decongestants
**Digital ulcers**
In secondary Raynaud's — particularly in scleroderma — sustained or severe vasospasm leads to digital tip ischaemia, producing painful, punched-out ulcers at the fingertips. These heal slowly and are prone to infection. Severe cases require prostacyclin infusion and wound care.
**Treatment**
*Non-pharmacological:* keeping warm is the most important intervention; thermal gloves, layered clothing, chemical hand warmers. Avoid beta-blockers and sympathomimetic cold remedies. Biofeedback for stress-related episodes.
*Calcium channel blockers:* nifedipine (slow-release) or amlodipine is first-line; reduces episode frequency and severity in 70–80% of patients.
*Phosphodiesterase-5 inhibitors:* sildenafil (Viagra) is an effective vasodilator for severe or refractory Raynaud's and digital ulcers.
*Prostacyclin infusion:* iloprost given intravenously is reserved for severe digital ulcers or critical ischaemia; hospitalization required.
*Botulinum toxin (Botox) injections:* injection into the palm and digital neurovascular bundles provides effective, prolonged reduction in vasospasm and promotes digital ulcer healing — an evidence-supported interventional option.
*Chemical or surgical sympathectomy:* cutting or chemical ablation of the sympathetic fibres to the hands; reserved for severe refractory cases.
Treatment options at Alimran Medical Center
Injection therapies
- Botox® injections
- Prolotherapy
- Ozone injection
- Trigger point injections
- Epidural steroid injections
Advanced therapies
Physiotherapy & rehabilitation
- Electrical stimulation
- Short and long wave therapy
- Laser therapy
- Ultrasound therapy
- Thermal biofeedback and desensitisation
- SpineMED® system
- Sigma
Book a consultation
The secretary schedules first appointments during clinic hours; please have prior imaging, operative notes and a current medication list available at the time of the call.
This page provides general information about raynaud's disease and is not a substitute for individual medical assessment. If your symptoms are severe or worsening, contact a clinician promptly.