In a recent study, researchers examined the factors linked to sleep quality in patients with chronic tension-type headache, reports Medical News Bulletin.

A tension-type headache is a common condition with a prevalence of about 42% in the general population worldwide. Symptoms include pain around the forehead (sometimes described as a “vice-like grip”) and the back of the neck. Tension-type headaches are usually limited and episodic and easily treated with over-the-counter pain medications. However, some people suffer from chronic tension-type headaches that occur in varying intensity for more than 15 days every month, causing significant disability.

A complex interaction of several factors is thought to cause tension-type headaches. Poor sleep quality is an important cause and consequence. A recent study in Spain looked at the factors that affect the quality of sleep in patients with chronic tension-type headache. The results were recently published in PLOS One.