 [ Symptoms ] is there such a thing as a weather allergy  for the past three years in the autumn i will start getting itchy red scaly rash from wrist to elbow it will last from september to usually april may it remains consistent through these months i remain flare free in the summer months i have asked my doctor countless times and he sent me home with a very strong hydrocortisone cream i have resorted to over the counter hydrocortisone which burns i can not use uv therapy as i am allergic to the sun and i am currently on an antihistamine for that [ Disease ] hi read through these two pieces top one from <link> vitamin d and psoriasis when you have psoriasis there is a thick patchlike layer of dry skin cells on the outer layer of your skin it can be itchy    there are different kinds of psoriasis    and the condition is associated with a poor immune system and in certain instances low vitamin d levels the “journal of investigative dermatology” showed that when exposed to ultraviolet b rays the element of sunlight that kick starts the vitamin d production system in the body vitamin d levels increased significantly and the symptoms of psoriasis disappeared similarly a study in “rheumatology international” also found that increasing vitamin d levels helped improve psoriasis symptoms and this is from <link> psoriasis is a skin condition that causes red flaky crusty patches of skin covered with silvery scales  psoriasis is a long lasting chronic disease that usually involves periods when you have no symptoms or mild symptoms followed by periods when symptoms are more severe also try some vitamin e capsules as well or some oil mixed with baby oil ans applied to your skin hope this helps you good luck