Acne rosacea is a chronic, acne-like condition affecting the skin, and sometimes the eyes. Rosacea affects the skin on the face and scalp, appearing as a red blush across the nose, cheeks, chin, and forehead. Over time, the skin becomes bumpy, developing pimples, pustules, and small broken blood vessels. In certain areas, the skin may become thickened. Several other conditions have a similar appearance, and are sometimes confused with rosacea.
Seborrheic Dermatitis
Seborrheic dermatitis is an inflammatory skin disorder that may have a similar appearance to acne rosacea. It occurs on the face and scalp, in areas where there are a high concentration of oil glands. A type of yeast called malessizia is thought to play a role in the development of seborrheic dermatitis, according to MedlinePlus. Both rosacea and seborrheic dermatitis can cause the face to have a reddish, flushed appearance. Both conditions can also result in redness and swelling around the eyes and on the eyelids. Each of these conditions can cause irritation of the conjunctiva of the eyes as well, according to the Merck Manuals Online Medical Library. Seborrheic dermatitis often involves areas other than the face, producing scaling, and yellow crusts on the skin. These symptoms help set it apart from acne rosacea.
Perioral Dermatitis
Perioral dermatitis is a red rash that is typically located around the mouth. It may also erupt around the nose, eyes, and forehead. Like rosacea, the condition causes red bumps and pustules to form on the skin and has an acne-like appearance. Topical steroids and certain lotions and creams can cause or contribute to perioral dermatitis.
The rash of perioral dermatitis is not present around the eyes and mouth, as it is with rosacea.
Acne Vulgaris
Acne vulgaris, otherwise known as acne, or pimples, is a skin disorder caused by clogged hair follicles. Anyone can have acne, but it most commonly affects adolescents due to hormonal changes taking place in their bodies. The condition causes the skin to break out in black heads, white heads, papules and pustules. Sometimes, an inflammatory reaction sets in causing pimples to develop into deep, painful cysts. Rosacea lacks the white heads and black heads seen in acne.


