Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had a headache so painful it seemed like your head was splitting? I once seemed like that, huddled in bed, not able to face the sunlight. I was dealing with sphenoid sinusitis, a condition that can actually tinker your life. https://sleepapneaweightgain73949.csublogs.com/38110079/sphenoid-sinusitis-no-further-a-mystery