Unilateral means on one side.
The terms unilateral is see frequently in discussions of Migraine attacks and cluster headaches, both of which tend to occur on one side of the head.
You can read more about unilateral characteristics of and other symptoms of Migraines and cluster headaches in
Read moreWhen we're looking at Migraine and headache information, whether it's from our doctor, a book, or an online article, we sometimes come... Read more »
In the simplest of terms, paroxysmal hemicrania (PH) is a rare form of headache that usually begins in adulthood. Characteristics of the... Read more »
Full Question:My pain specialist believes I have hemicrania continua -- a daily, unilateral headache with fluids around my eye membranes. I... Read more »
Full Question:I've had a headache, one sided, for about 10 days straight. I've been to the doctors before, they've all said tension... Read more »
Migraine is a common disabling primary headache disorder. Epidemiological studies have documented its high prevalence and high socioeconomic and... Read more »
Source: ADAM Encyclopedia
Cluster HeadachesCluster headaches are among the most painful, and least common, of all headaches. The pain can be so excruciating that they are... Read more »
Hemicrania continua is considered a primary headache disorder, meaning that it's not caused by another condition. It's a rare but treatable disorder.... Read more »
Source: ADAM Encyclopedia
Many patients report a delay of 1 - 6 years in the diagnosis of their cluster headaches. Migraine-like symptoms (light and sound sensitivity, aura,... Read more »
In the simplest of terms, paroxysmal hemicrania (PH) is a rare form of headache that usually begins in adulthood. Characteristics of the pain of PH... Read more »