Types<unk>  may be divided as occurring suddenly, acute, or gradually, chronic. Acute Acute<unk>  is an infection of the folds of tissue surrounding the nail of a finger or, less commonly, a toe, lasting less than six weeks. The infection generally starts in the<unk> m at the side of the nail, with local redness, swelling, and pain. Acute<unk>  is usually caused by direct or indirect trauma to the cuticle or nail fold, and may be from relatively minor events, such as dishwashing, an injury from a splinter or thorn, nail biting, biting or picking at a hangnail, finger sucking, an ingrown nail, or manicure procedures. Chronic==== Chronic<unk>  is an infection of the folds of tissue surrounding the nail of a finger or, less commonly, a toe, lasting more than six weeks. It is a nail disease prevalent in individuals whose hands or feet are subject to moist local environments, and is often due to contact dermatitis. In chronic<unk> , the cuticle separates from the nail plate, leaving the region between the proximal nail fold and the nail plate vulnerable to infection. It can be the result of dish washing, finger sucking, aggressively trimming the cuticles, or frequent contact with chemicals (mild alkalis, acids, etc.). Alternatively,<unk>  may be divided as follows: * Candidal<unk>  is an inflammation of the nail fold produced by C. albicans. * Pyogenic<unk>  is an inflammation of the folds of skin surrounding the nail caused by bacteria. Generally, acute<unk>  is pyogenic, as it is usually caused by a bacterial infection.
Paronychia
Onychomycosis
Leukonychia
Anonychia
Chromonychia
Melanonychia
Platonychia
Trachonychia