Anti-allergy needles usually have two types: the first is the antihistamine class of drugs, commonly used are Benadryl, the side effects of this drug is usually the role of the central nervous system, causing dizziness or more tired, poor mental state, and even want to sleep and some other central nervous system suppression performance. In addition, there is also a certain side effect on the glandular inhibition of secretion, resulting in some manifestations such as dry mouth, dry tongue. The second anti-allergic needle is glucocorticoid drugs, such as dexamethasone, prednisone and other drugs, the most common side effects of these drugs are gastrointestinal reactions, such as nausea, vomiting, abdominal pain, diarrhea and other symptoms, some patients will also appear to have dizziness, headache and other manifestations. Long-term side effects include weight gain, increased blood pressure and blood sugar, osteoporosis, acne, etc., and should be used under the guidance of a doctor.