Staying in a hotel with a red rash on the neck may be caused by allergies, specifically induced by more causes of allergies, generally treated with medication for treatment. If the hotel bedding has mites or mosquito bites in the house, it can lead to insect bite dermatitis, manifested as red papules on the skin surface, accompanied by varying degrees of itching, redness and swelling and other reactions. If contact with hotel toiletries appear allergic, may be contact dermatitis, also belongs to a type of allergy. If the patient’s symptoms are mild, local topical glycerine lotion, glucocorticoid creams, such as mometasone furoate cream, hydrocortisone butyrate cream and so on, can be used to improve the symptoms. If the patient’s itching is significant, oral medications such as loratadine tablets and cetirizine hydrochloride tablets can be applied at the same time. All of the above drugs have adverse reactions and are recommended to be used under medical supervision. Residence hotel neck red rash causes more, it is recommended to go to the hospital in a timely manner, clear cause and follow the doctor’s instructions for treatment.