Headache is defined as pain in the head that is located above the eyes or the ears, behind the head (occipital), or in the back of the upper neck. Headache, like chest pain or dizziness, has many causes.

Most headaches happen outside the skull, in the nerves, blood vessels, and muscles that cover the head and neck. The muscles or blood vessels can swell, tighten, or go through other changes that stimulate or put pressure on the surrounding nerves. These nerves send a rush of pain messages to the brain, which brings on a headache.

Sex headaches are usually nothing to worry about. But they can sometimes be associated with bleeding problems inside and around the brain.

Abdominal Migraine

Abdominal migraine is a form of migraine seen mainly in children. It's most common in children ages five to nine, but can occur in adults as well, and consists primarily of abdominal pain, nausea, and vomiting.

Silent Migraine Or Acephalgic Migraine

Silent migraine is one name for a type of migraine attack that doesn't include a headache. As strange as it may sound, it's actually not all that unusual. Over the years, silent migraine has gone by other names, including acephalgic migraine, sans-migraine, migraine equivalent, eye migraine, visual migraine, ocular migraine, painless migraine or simply migraine aura without headache. Today it's usually called migraine aura without headache.

Alice In Wonderland Syndrome

Alice in Wonderland syndrome (AIWS, named after the novel written by Lewis Carroll), also known as Todd's syndrome, is a disorienting neurological condition which affects human perception. Sufferers may experience micropsia, macropsia, and/or size distorsion of other sensory modalities. A temporary condition, it is often associated with migraines, brain tumours, and the use of psychoactive drugs. It can also present as the initial sign of the Epstein-Barr Virus.

Alice in Wonderland syndrome (AWS) is a neurological condition where a person experiences a complete distortion of perceptual reality. They experience acute visual disorders relating to shape, size, colour, and the relationship of objects. They are confused by everything they perceive.

Basilar Type Migraine

A Basilar-Type Migraine is a Migraine that has aura symptoms originating from the brainstem and/or affecting both hemispheres of the brain at the same time, but with no motor weakness. The aura of BTM usually lasts less than 60 minutes, but in some cases can be more extended. Many Migraineurs who have BTM also report Migraine with typical aura. The aura of BTM can include temporary blindness, which is one reason they can be quite terrifying.

Migraines aren't just another bad headache; they are intense throbbing headaches that can be further distinguished by specific symptom patterns. A basilar type migraine which is also called Bickerstaff syndrome, involves symptoms such as dizziness, incoordination, confusion, hearing changes and numbness.

Chronic Daily Headache

Most people have headaches from time to time. But if you have a headache more days than not, you may be experiencing a variety of head pain known as chronic daily headaches.

Chronic Daily Headache (CDH) is defined as headache which is present on most days i.e. > 15 days a month, typically occurring over a six-month period or longer and it can be daily and unremitting. In some patients, an episode of chronic headache resolves in a much shorter time, it can occur in children and in the very old. Twice as many men have it compared to women.

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