Calcinosis Cutis

Calcinosis Cutis (Calcium Deposits in Skin)

Overview

Calcinosis cutis refers to the deposition of insoluble calcium salts in the skin and subcutaneous tissue. It can be classified as dystrophic (in damaged tissue with normal calcium levels), metastatic (elevated calcium or phosphate levels), idiopathic (no identifiable cause), or iatrogenic (related to medical procedures). The deposits form firm, white or yellowish nodules that may ulcerate and discharge chalky material.

Key Symptoms

• Firm, hard, white or yellowish papules, nodules, or plaques in the skin
• May discharge chalky, white, paste-like material if the surface breaks down
• Overlying skin may become red, tender, or ulcerated
• Variable size from tiny papules to large, deep deposits
• May be painful if located over joints or pressure points
• Can cause limited range of motion if extensive

Affected Areas

Fingers, Hands, Elbows, Knees, Buttocks, Any area of prior skin injury

Care Instructions

1. See a dermatologist to identify the type and underlying cause of calcinosis.
2. Laboratory workup including calcium, phosphorus, and parathyroid hormone levels should be performed.
3. Treat the underlying condition if identified (autoimmune disease, metabolic disorder).
4. Surgical excision may be needed for large, symptomatic, or ulcerated deposits.
5. Medications such as diltiazem, colchicine, or minocycline have been tried with variable success.
6. Wound care for ulcerated lesions to prevent secondary infection.

Medical Disclaimer: This information is for educational purposes only and does not replace professional medical advice. Always consult a qualified dermatologist for diagnosis and treatment.

Prevalence: Uncommon; most often seen in association with autoimmune connective tissue diseases, particularly systemic sclerosis and dermatomyositis