Behind the ear to the neck long a lot of small bumps may be due to folliculitis, neurodermatitis, contact dermatitis and other factors, need to clarify the cause of the symptomatic treatment, the common treatment methods are drug therapy, physical therapy, surgical treatment and other methods. 1. Folliculitis: mainly due to bacterial, fungal and other infections, manifested as red papules, small blisters, papules and other symptoms, can be accompanied by itching, may appear painful when touching. It can be treated with topical mupirocin ointment, fusidic acid ointment, ketoconazole and other drugs, infrared rays, photodynamic therapy and other physical therapy, and surgical treatment if necessary. 2. Neurodermatitis: generally first appear intense itching, followed by the gradual appearance of skin lesions, lesions manifested as polygonal flat papules, gradually fused and expanded into the skin moss-like changes. It can be treated with hormonal drugs such as hydrocortisone ointment and tretinoin cream, and can be combined with oral medication such as loratadine if necessary. 3. Contact dermatitis: caused by contact with exogenous substances, lesions can be manifested as erythema, papules, herpes, etc., lesions are mostly confined to the contact area, the border is clear. Need to actively look for allergens, avoid re-exposure, can use glycerine lotion local application, itching is obvious when you can take oral loratadine, cetirizine and other drugs to stop itching. Behind the ear to the neck long a lot of small bumps may also be due to other factors, it is recommended that patients seek medical attention in a timely manner, in order to clarify the cause of the symptomatic treatment, to avoid self-medication, so as not to delay the condition. The medication needs to be used in accordance with the doctor’s instructions.