Frequent colds and headaches may be caused by factors such as decreased immunity, allergies, rhinitis and sinusitis. 1. Decreased immunity: Immunity is the body’s own defense mechanism, which is the body’s ability to identify and eliminate foreign invasive bacteria, viruses and so on. When the immunity drops, it will easily lead to low resistance of the body, resulting in infection by viruses and bacteria, causing frequent colds and headaches. 2. Allergy: If the patient belongs to the allergic body, it is easy to have frequent colds, headaches and other symptoms, and also accompanied by sneezing, nasal discharge and other symptoms, you need to consider whether it is due to allergies. 3. Rhinitis: If the patient suffers from rhinitis and other diseases, headache, sneezing, runny nose and other symptoms often occur. Patients who often have colds and headaches should go to the hospital in time, and after clarifying the cause of the disease, they should be given appropriate treatment and therapy under the guidance of the doctor.