Baker’s nevus, also known as pigmented hairy epithelial nevus, generally has little effect on health. However, pigmented nevus of the hair may appear hyperpigmentation, follicular papules, itching and other uncomfortable symptoms, it is recommended to seek medical treatment in time. 1. Hyperpigmentation: Baker’s nevus is a kind of non-contagious hyperpigmented spot or plaque slightly elevated above the skin. It may cause some yellow or brown pigmentation on the skin surface of the patient’s body, thus affecting the aesthetics. 2. Follicular papules: follicular papules on the surface of pigmented patches caused by hair muscle hyperplasia is one of the characteristics of Becker’s nevus, which is prevalent in males, commonly found on the side of shoulder or chest, and usually has no self-conscious symptoms. 3. Itching: Baker’s nevus is a benign tumor occurring on the skin, its development is relatively slow, a small number of patients may occasionally have itching sensation, generally do not need special treatment. Baker’s nevus is a benign lesion, which has little effect on health. If the above symptoms occur, it is recommended to consult a doctor in time and standardize the treatment under the guidance of a doctor.