Granuloma anulare plaque type

Asymptomatic, chronic, necrobiotic, granulomatous inflammation of the skin, with formation of skin-coloured or slightly reddened papules and plaques that form charkateristic anular structures.

Presumably polyätiological: Formation after insect bites or other local trauma, in the context of infections, autoimmune diseases of the thyroid gland, common in diabetes mellitus, in therapy with vitamin D3(granuloma anulare vigantolicum).

Previously often associated with tuberculosis.

Possibly genetic predisposition.

Occurring mainly in adults, preference for the female sex.

Preferably acra, extensor sides of the joints, back of the hand and foot, back of the fingers.

Granuloma anulare of the plaque type is a solitary or few, circular or ring-shaped, completely asymptomatic structure that can reach a diameter of 1.0 to 5.0 cm. These circular structures are composed of smaller, aggregated, solid, surface-smooth nodules and plaques, which are not always clearly demarcable. The growth of the outline structures is slow and can last for many months. If 2 circular or ring structures meet together, the result is curved ornaments, typically the outline structure of the anular granuloma does not exceed a maximum size of 5.0 cm. In rare cases, however, an extreme expansion of up to 10.0 cm can occur(Granuloma anulare giganteum), without any explanation in individual cases.

S.u. Granuloma anulare classic type