Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had a headache so painful it seemed like your head was splitting? I once felt like that, snuggled in bed, not able to face the sunlight. I was dealing with sphenoid sinusitis, a condition that can actually tinker your life. https://sleepapneachinstrapamazon07394.isblog.net/the-20-minute-rule-for-sphenoid-sinusitis-48755219