Congenital structural abnormalities of the skin.

Diseases affecting the orderly growth and persistence of hair.

The outer covering of the body that protects it from the environment. It is composed of the DERMIS and the EPIDERMIS.

'Skin diseases' is a broad term for various conditions affecting the skin, including inflammatory disorders, infections, benign and malignant tumors, congenital abnormalities, and degenerative diseases, which can cause symptoms such as rashes, discoloration, eruptions, lesions, itching, or pain.

The process of aging due to changes in the structure and elasticity of the skin over time. It may be a part of physiological aging or it may be due to the effects of ultraviolet radiation, usually through exposure to sunlight.