Granuloma Annular

Ring granuloma (granuloma anulare; synonym anular granuloma) is a chronic inflammatory skin disease of unknown etiology, characterized by the appearance on the skin of one or more ring-shaped rashes of pink or reddish-brown color with a scaly surface.

The disease is more common in women aged 30-50 years. The rashes are localized mainly on the dorsum of the hands, forearms, and shins. There are several clinical forms of granuloma annulare - typical, subacute and atypical forms.

In the typical form, one or several (up to 10) ring-shaped rashes with a diameter of 1-3 cm with clear boundaries appear on the skin. The central part of the rash may undergo reverse development with the formation of scars.

The subacute form is characterized by the appearance of infiltrated reddish-brown plaques, which can merge and form large lesions.

To make a diagnosis, a histological examination of a skin biopsy is performed. Treatment includes the use of topical glucocorticosteroids, cryotherapy, and phototherapy.