Whether or not allergic dermatitis causes headaches, dizziness, and weakness varies from condition to condition; while some patients are likely to experience these conditions, others only experience symptoms such as runny nose, nasal congestion, and sneezing. Common symptoms of allergic rhinitis such as itchy nose, runny nose, nasal congestion and sneezing. Allergic rhinitis is also often accompanied by sinusitis, patients will experience nasal congestion, runny nose, headache and other symptoms, due to nasal congestion seriously affect the breathing, there is a lack of oxygen will also appear dizziness, body weakness. Allergic rhinitis patients with headache, dizziness, weakness, etc., may also be at the same time infections and other diseases, the need to consult a doctor in a timely manner, to clarify the cause of the disease, and comply with the doctor’s instructions to standardize the use of medication and treatment.