<unk>  <unk> , also known as rebound headache usually occurs when painkillers are taken frequently to relieve headaches. These cases are often referred to as painkiller headaches. Rebound headaches frequently occur daily, can be very painful and are a common cause of chronic daily headache. They typically occur in patients with an underlying headache disorder such as migraine or tension-type headache that "transforms" over time from an episodic condition to chronic daily headache due to excessive intake of acute headache relief<unk> s.<unk>  is a serious, disabling and well-characterized disorder, which represents a worldwide problem and is now considered the third-most prevalent type of headache. Population-based studies report the prevalence rate of<unk>  to be 1% to 2% in the general population, but its relative frequency is much higher in secondary and tertiary care.
Medication overuse headache
Lupus headache
Vascular headache
Cluster headache
Cervicogenic headache
External compression headache
Cold-stimulus headache
Red wine headache