What Is Quinquaud’s Disease (Folliculitis Decalvans)? Scalp Pustules, Scarring Hair Loss & Treatment Options Folliculitis decalvans, historically called Quinquaud’s disease, is a chronic neutrophilic scarring alopecia that causes recurrent scalp inflammation and can permanently destroy hair follicles. Active disease

What Is Pyogenic Granuloma? Bleeding Skin Growth, Causes & Treatment Options Pyogenic granuloma is a benign vascular growth made of proliferating capillaries that often grows quickly and bleeds easily after minor contact. It is more accurately described as a

What Is Pyoderma Gangrenosum? Painful Skin Ulcers, Causes & Treatment Options Pyoderma gangrenosum is a rare neutrophilic inflammatory skin disease that can cause extremely painful ulcers which enlarge rapidly and may be mistaken for serious infection or gangrene. PG

What Is Psoriasis? Skin Plaques, Triggers & Treatment Options Psoriasis is a chronic immune-mediated inflammatory disease that causes skin cells to accumulate too quickly, producing thickened, scaly plaques that can itch, burn, crack or become sore. Instead of acting

What Is Pruritus / Itching? Skin Itch, Causes & Treatment Options Pruritus is the medical term for itching—a skin sensation that creates an urge to scratch and can arise from skin disease, internal illness, medication effects or abnormal nerve

What Is Prurigo Nodularis? Itchy Skin Nodules, Causes & Treatment Options Prurigo nodularis is a chronic inflammatory skin disease that causes intensely itchy firm nodules and is sustained by abnormal itch signaling, inflammation and repeated scratching. The itch often