👉 Sphenoiditis is a condition that occurs when the sphenoid bone, which is part of the skull, becomes inflamed or swollen. It can occur in both males and females, but it tends to be more common in males. The sphenoid bone is located at the back of the skull, just above the front of the ear. It helps to protect the brain from external pressure, such as when someone falls off a horse or car. When this protective function becomes compromised, it