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Cluster headaches may occasionally be referred to as "alarm clock headache" because of the regularity of their recurrence. Cluster headaches often awaken individuals from sleep. Both individual attacks and the cluster grouping can have a metronomic regularity; attacks typically strike at a precise time of day each morning or night.
Individuals with CPH suffer multiple short, severe headaches a day, often more than five, with most lasting between 5 and 30 minutes each. When compared to cluster headaches, CPH attacks are typically shorter. [6] Each headache is centered around the eye, temple and forehead or the back of the head and is localized to one side of the head.
A headache, also known as cephalalgia, is the symptom of pain in the face, head, or neck. It can occur as a migraine, tension-type headache, or cluster headache. [1] [2] There is an increased risk of depression in those with severe headaches. [3] Headaches can occur as a result of many conditions.
Hemicrania continua (HC) is a persistent unilateral headache that responds to indomethacin. It is usually unremitting, but rare cases of remission have been documented. [1] Hemicrania continua is considered a primary headache disorder, meaning that another condition does not cause it.
According to this classification, migraine is a primary headache disorder along with tension-type headaches and cluster headaches, among others. [118] Migraine is divided into six subclasses (some of which include further subdivisions): [119] Migraine without aura, or "common migraine", involves migraine headaches that are not accompanied by aura.
Cluster headache, a neurological disease that involves an immense degree of pain; Cluster of differentiation, protocol used for the identification and investigation of cell surface molecules present on white blood cells; Winter cluster, in beekeeping, a well-defined cluster of honey bees in cold temperatures
Trigeminal autonomic cephalalgia (TAC) refers to a group of primary headaches that occurs with pain on one side of the head in the trigeminal nerve area and symptoms in autonomic systems on the same side, such as eye watering and redness or drooping eyelids. [1] [2]
SUNCT must be properly distinguished from cluster headaches, since cluster headaches also occur several times per day with separate attacks, and share some common symptoms. However, cluster headaches usually last longer (up to three hours), occur less often (three to five attacks per day), and do not accompany cranial autonomic symptoms.