Chronic Migraine
A migraine is usually a moderate or severe headache felt as a throbbing pain on 1 side of the head. Many people also have symptoms such as feeling sick, being sick and increased sensitivity to light or sound. Migraine is a common health condition, affecting around 1 in every 5 women and around 1 in every 15 men. They usually begin in early adulthood. There are several types of migraine, including - migraine with aura – where there are specific warning signs just before the migraine begins, such as seeing flashing lights - migraine without aura – the most common type, where the migraine happens without the specific warning signs- migraine aura without headache, also known as silent migraine – where an aura or other migraine symptoms are experienced, but a headache does not develop. Some people have migraines frequently, up to several times a week. Other people only have a migraine occasionally. It's possible for years to pass between migraine attacks.
Source: NHS