There are several possible cases of acne on the neck. 1. Folliculitis is caused by staphylococcus aureus, hemolytic streptococcus, staphylococcus epidermidis and other bacterial infections. It can be treated by topical application of Baiduobang ointment or fusidic acid ointment, and oral antibiotics can be taken if the symptoms are serious. 2. Malassezia folliculitis, malassezia folliculitis is a folliculitis caused by fungal infection. If there is a pox on the neck, there is also the same pox on the chest and back, fungal examination can find that malassezia is considered to be malassezia folliculitis, and the treatment is to apply antifungal ointment such as terbinafine hydrochloride ointment externally. 3. Filamentous warts, caused by human papillomavirus infection, can appear smooth and strip like vegetations. 4. Infectious soft warts can form hemispherical, smooth surface, skin color, and concave papules in the middle. It is caused by excessive scratching of the skin to cause small damage and lead to virus invasion.
