Symptoms of allergy headaches include any headache accompanied by itching, sneezing and a runny nose, which is symptomatic of hay fever or seasonal allergies, according to the American Academy of Allergy, Asthma & Immunology. Often called a sinus headache, this type of headache is difficult to link to allergies, and when it occurs frequently, it is important for sufferers to visit an allergist to determine its source and minimize headaches.
A doctor is able to perform a nasal endoscopy to determine if there is evidence of chronic rhinosinusitis, or a sinus infection caused by an allergic response, according to the Academy of Allergy, Asthma and Immunology. When this is the case, headaches and allergy symptoms occur at the same time, and both the headache and associated facial pain can be alleviated within seven days of beginning treatment for chronic rhinosinusitis.
When headaches are diagnosed as being caused by allergies, common treatments include minimizing exposure to the allergens, taking medication or receiving allergy shots, according to the American Academy of Allergy, Asthma & Immunology. The majority of people who suffer from self-diagnosed sinus headaches are actually suffering from migraine headaches. Treatment for migraines and headaches caused by allergies are completely different, making it important to receive an accurate diagnosis for treatment to be effective.