Sinus pain can be very discomforting, and even painful, if patients don’t try to get the proper treatment or manage their symptoms. The Mayo Clinic explains that sinus pain is when a person experiences mild to moderate headache-like pain due to a sinus infection. A sinus infection, known as sinusitis, causes sinus pain as do migraines and frequent headaches. While most people confuse sinus pain with headaches or migraines, chronic sinusitis can lead to ...