Itchy neck with small bumps consider the appearance of contact dermatitis, hives, eczema and other allergic diseases. You can take medication under the advice of a doctor. 1. Contact dermatitis: an allergic disease caused by contact with allergens, allergens through the skin or mucous membrane contact, resulting in an abnormal immune response, thus triggering skin symptoms. Contact dermatitis lesions can be manifested as erythema, papules, papules, blisters, itchy bumps on the neck and so on. It can be treated with anti-allergic medications, including cyproheptadine cream, tretinoin ointment, and dianabed cream. 2. Hives: The sudden appearance of red bumps on the neck, accompanied by itching may be allergies lead to hives. Urticaria starts rapidly and may appear as reddish bumps of varying sizes, accompanied by itching and other symptoms. Important drugs for the treatment of various kinds of urticaria, such as ebastine tablets, loratadine tablets and so on. 3. Eczema: it is an inflammation of the superficial dermis and epidermis caused by a variety of internal and external factors, clinically acute lesions are dominated by pimples and papules with a tendency to ooze, and chronic lesions are dominated by mossy lesions, which are prone to recurrent episodes. It can be treated with oral antihistamines, such as cetirizine hydrochloride tablets and diclofenac tadalafil tablets. Topical hydrocortisone butyrate cream, fluticasone propionate cream and so on. However, other factors can not be ruled out, it is recommended that the patient promptly consult a doctor to give targeted treatment.