How many types of calcinosis cutis are there? - Dystrophic calcinosis cutis: Occurs when there is deposition of calcium salts within inflamed or damaged tissue. Calcium and phosphorus metabolism is normal. It may be localized, such as within acne scars or epidermoid cysts, or widespread. Widespread dystrophic calcinosis cutis most often occurs in association with connective tissue disease, such as dermatomyositis or scleroderma.
- Metastatic calcinosis cutis: Is seen with aberrations in calcium or phosphorus metabolism. It usually occurs when the serum calcium-phosphorus product exceeds 60.
- Idiopathic calcinosis cutis: Is the term used when no obvious underlying cause can be identified for tissue calcification. As with dystrophic calcification, this variant may be widespread, such as in calcinosis universalis, or localized, as in tumoral calcinosis or scrotal calcinosis.
- Iatrogenic calcinosis cutis: Deposition of calcium due to medical agents such as intravenous calcium gluconate, intravenous calcium chloride, calcium alginate dressings, and calcium chloride electrode paste.
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