Are all headaches sinusitis?

Not all headaches are sinusitis. In addition to sinus causes, there are several other causes of headaches, including migraines, tension headaches, and cluster headaches. Also, sinusitis doesn't necessarily cause headaches, but they are common due to the pressure effects that come along with sinusitis.

While headaches can certainly be caused by sinusitis, this is not the only cause of headaches. There are many types of headaches, including migraines, tension headaches, sinus headaches, and cluster headaches. Headache can also be caused by more serious diseases such as bleeding in the brain or brain cancer, although these causes are far less commonly the cause of headaches. Headaches can be caused by migraines, which are a form of headache in which people are often sensitive to light or sound and may even have nausea or vomiting. Tension headaches are also very common causes of headache. Patients often complain that the base of their skull and their neck hurt. Cluster headaches occur more commonly in men than women and are characterized by a very intense but very short duration of symptoms often occurring over one side of the head or in one eye; they can be accompanied by tearing of eye or nasal stuffiness. (MD Consult - "Headaches Differential Diagnosis", "Cluster Headaches", "Migraines": www.mdconsult.com)