May Be Caused by

Acne vulgaris

Basal cell skin cancer

Chondrodysplasia punctata Conradi-Hünermann type

Chronic venous insufficiency

COPS syndrome

CREST syndrome

Dermatomyositis

Dystrophic calcinosis

Familial osteoma cutis

Fibrodysplasia ossificans progressiva

Hypercalcemia

Hyperphosphatemia

Idiopathic calcinosis

Inflammation

Injection site

Intravenous calcium salt administration

Metastatic calcinosis

Morphea

Multiple heel sticks

Neoplasm

Osteoma cutis and hemihypertrophy

Osteoma cutis with dysmorphism

Primary osteoma cutis

Pseudohypoparathyroidism

Scar

Scleroderma

Solitary congenital nodular calcification

Subcutaneous fat necrosis of newborn

Toxic epidermal necrolysis

Trauma

Werner syndrome