Café-au-lait macule Calluses Candida Candidiasis of skin folds Canker sores Cantharidine Capillaritis Capillary vascular malformations Capsaicin Carcinoma, basal cell Carcinoma, squamous cell Cellulitis Cheilitis Cellulitis Chemical peeling Cherry angioma Chickenpox Chilblains Childhood bullous pemphigoid Childhood melanoma Cholinergic urticaria Chondrodermatitis nodularis helicis Chronic urticaria Cleansers Coal tar treatment Cleansers Cold sores Comedonal acne Compulsive skin picking Computer mouse dermatitis Condylomas Confluent and reticulated papillomatosis Congenital fibromatosis Congenital naevi Conjunctivitis Contact allergic cheilitis Contact allergic dermatitis Contact dermatitis Corns and calluses Corticosteroids, systemic Corticosteroids, topical Cosmetics allergy Cracked heels Cradle cap Cutaneous B-cell lymphoma Cutaneous horn Cysts