definition
Acne Grade III - Most severe form of acne with comedones, papules, indurated painful nodules and pustules with haemorrhagic crusts (Braun-Falco 3rd ed./G. Eysenbach)
UMLS
Acne cystica, Acne vulgaris, cystic, Acne, cystic, Cystic acne, Cystic acne vulgaris