Sphenoid Sinusitis: Headaches, Fungal Causes, and Treatments Have you ever had head pain so bad it felt like your skull was splitting? I when felt like that, curled up in bed, unable to face the sunlight. I was handling sphenoid sinusitis, a condition that can truly mess with your life. https://ricardovuyac.alltdesign.com/facts-about-sphenoid-sinusitis-revealed-51064868