Headaches can happen for many reasons, but during allergy season, they’re often linked to sinus pressure and inflammation. If you’ve been dealing with a dull, persistent headache alongside congestion or sneezing, your symptoms may be related to seasonal allergies. Allergy headaches can feel different from other types of headaches, such as tension headaches or migraines. Understanding what they feel like, and what causes them, can help you find relief and know when to ...