Chest itching may be caused by fungal infection, folliculitis, eczema and other diseases. 1. Fungal infections: skin diseases caused by fungal infections such as psoriasis, tinea versicolor, and trichophyton rubrum, can occur in the chest, and are mainly characterized by erythema or pimples, accompanied by itching. The main use of drug treatment such as itraconazole. 2. Folliculitis: mostly caused by bacterial infection, can be seen on the surface of staphylococcus, streptococcus infection, can be manifested as red papules. The main treatment is medication, such as mupirocin ointment. 3. Eczema: a skin allergic disease, can be manifested as chest pimples, local oozing and itching. The main treatment is medication, such as pimecrolimus ointment. 4. Breast tumor: eczema-like breast cancer is manifested as skin pain, itching and ulcerative lesions in the nipple areola area, which can also be accompanied by yellow or bloody secretions. Itchy breasts should be timely medical treatment, follow the doctor’s instructions to receive treatment. The use of medications should be under the supervision of a doctor.