Ringworm on the back of the neck is considered to be related to ringworm, chronic simple moss, psoriasis and other diseases.
1. Tinea corporis: the etiology is mainly related to the infection of dermatophytes such as Trichophyton rubrum and Trichophyton intermedius. Patients will appear localized pimples, papules, with the development of time gradually formed erythema, and covered with scales, lesions are generally widely distributed.
2. Chronic lichen simplex: the cause of the disease is not clear, may be related to mental factors, endocrine disorders and other reasons. The patient will have polygonal flat papules, which are firm and glossy, light red or normal skin color, and then develop with time to form mossy lesions, which are mostly seen in the neck and inner thighs.
3. Psoriasis: the cause of the disease is still unclear, may be related to genetic, environmental and other factors. Patients will appear red papules locally, which gradually expand into red patches covered with white scales.
There are more reasons for ringworm on the back of the neck, so it is recommended to go to a regular hospital for consultation and examination in order to clarify the cause of the disease.