patch-type granuloma annulare patch-type granuloma annulare patch-type granuloma annulare (also known as macular granuloma annulare) is a skin condition of unknown cause, more commonly affecting women between 30 and 70 years of age, characterized by flat or slightly palpable erythematous or red-brown skin lesions.: 704 patch-type granuloma annularespecialtydermatology