<unk> s are a neurological disease best known as severe headaches. Usually,<unk> s cause episodes of severe or moderate headache (which is often one-sided and pulsating) lasting between several hours to three days, accompanied by gastrointestinal upsets, such as nausea and vomiting, and a heightened sensitivity to bright lights (photophobia) and noise (phonophobia). Approximately one-third of people who experience<unk> s get a preceding aura.<unk> s' secondary characteristics are inconsistent. Triggers precipitating a particular episode of<unk>  vary widely. The efficacy of the simplest treatment, applying warmth or coolness to the affected area of the head, varies between persons, sometimes worsening the<unk> .
Migraine
Tension headache
Cluster headache
Subarachnoid hemorrhage
Thunderclap headache
Benign paroxysmal positional vertigo
Red wine headache
Benign positional vertigo 