Pemphigus is generally characterized by more erythema and loose, easily broken blisters on the skin, which may be accompanied by different degrees of oral damage. There are four common types of pemphigus, and the symptoms of different types of pemphigus are different. 1. Ordinary-type pemphigus: it occurs in young and middle-aged people, mostly starting from the chest and back and head, and the rash can gradually spread all over the body. The manifestation of the body appear scattered blisters and blisters, part of the blisters around the red halo, many patients with oral vesicles or blisters. 2. Proliferative pemphigus: it occurs in folded areas, such as armpits, breast edges, vulva and perianal area. The manifestation of the skin in the appearance of easy to break the blisters, blisters broke in the original place appeared papillary pimples, oral breakage is relatively minor. 3. Erythematous pemphigus: It is found on the scalp, face, forearms and chest and back and other sebaceous secretion or exposed parts. The manifestation of the skin scattered erythema, erythema on the blisters, blisters after the formation of greasy scabs, usually does not violate the oral cavity. 4. deciduous pemphigus: it occurs in the elderly and is more common on the upper body, manifested by blisters on the erythema, and the blisters are easy to break and form scabs. All of the above types of pemphigus are characterized by blisters that are easy to break, fluid that can enter the skin next to the blisters when pressed, and normal skin that is easy to be rubbed. It is recommended that patients go to the hospital in a timely manner, improve the examination to clarify the diagnosis, and then under the guidance of the doctor for symptomatic treatment.