<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello, my husband has had a persistent rash on and off for about a year now. It starts to appear on his neck and then within a day will have spread to cover his chest, stomach, arms and part of his back. It looks like a bad sunburn. He says it itches very bad and when he takes warm showers he says it feels like pin pricks all over. Hes gone to the er and they gave him an antihistamine but it didnt help. Please help. Kasandra  <response>: Hi Kazan Chat Doctor. After reading your query it appears that your husband has the problem of Actinic dermatitis or Contact dermatitis. Sometimes both can coexist together. Actinic dermatitis is due to exposure to sunlight wile the contact allergy is due to exposure to certain day-to-day life chemicals. WE need to have detailed examination for the best possibility. You can meet a dermatologist who can guide you best for the problem. For the betterment kindly follow the suggestions below:-Apply over the counter calamine lotion 3-4 times a day.-You can do cold water compresses to reduce the intensity of itching.-Do not scratch or rub the skin as it can lead to further aggravation.-The best measure is to take oral anti histamine like loratadine or levocetrizine under medial advise. Hope this information will help. If you have any further queries I will be happy to help. With good health wishes 