Patients with skin allergy should be advised to go to the hospital for further examination, because there are many manifestations of skin allergy, such as urticaria and eczema. After going to the hospital, patients should do blood tests, such as IGE, adrenal hormones, allergens and so on. It is also necessary to judge what kind of disease it is. If it is urticaria, it may also be related to thyroid antibodies. It is suggested to check thyroid and immune indexes. If it is eczema, patch test and prick test may be needed. Therefore, it is recommended that patients with skin allergies go to the hospital for relevant examinations. If you suddenly itch at home and have serious allergies, you can take anti-allergic drugs at home first, such as loratadine and cetirizine.