Category: Diseases

The term desmoplasia refers to connective tissue proliferation and, when applied to malignant melanoma, describes different clinical presentations; however, each has a similar microscopic pathology characterized by (1) a dermal

Definition Tinea capitis: Dermatophyte (fungal) infection of the scalp and its follicles. Tinea corporis/Tinea cruris: Dermatophyte infection of the skin of the trunk, limbs or face in tinea corporis, only

Dermatophytes are a unique group of fungi that are capable of infecting nonviable keratinized cutaneous epithelium including stratum corneum, nails, and hair. Dermatophytic genera include Trichophyton, Microsporum, and Epidermophyton. The

Dermatomyositis (DM) is a systemic disease characterized by violaceous (heliotrope) inflammatory changes of the eyelids and periorbital area; erythema of the face, neck, and upper trunk; and flat-topped violaceous papules

Repeated solar injuries over many years ultimately can result in the development of a skin syndrome, dermatoheliosis. Dermatoheliosis (DHe) results from excessive and/or prolonged exposure of the skin to ultraviolet

A dermatofibroma is a very common, button-like dermal nodule, usually occurring on the extremities, important only because of its cosmetic appearance or its being mistaken for other lesions, such as

Definition Atopic dermatitis: An acute, subacute, usually chronic and pruritic, relapsing inflammation of epidermis and dermis. Commonly occurs in individuals with a family history of asthma, hayfever, allergic rhinitis, or

Cutaneous tuberculosis (TB) is essentially an invasion of the skin by Mycobacterium tuberculosis, the same bacteria that cause TB of the lungs (pulmonary TB). Cutaneous TB is a relatively uncommon

Cutaneous T cell lymphoma (CTCL) is a term that applies to T cell lymphoma first manifested in the skin, but since the neoplastic process involves the entire lymphoreticular system, the

Cutaneous reactions to arthropod bites (CRAB) are inflammatory and/or allergic reactions, characterized by an intensely pruritic eruption at the bite sites hours to days after the bite, manifested by solitary