pain or discomfort in the head or face area. Tension headaches (usually dull, from back to front, pressure on both sides) could last a few minutes, usually 30 minutes, and worsen with noise and in hot, stuffy environments. They are related to muscle contraction, and zre mostly experienced as pain in the back of the head and neck. Cluster headaches are usually around one eye or temple, last from 30 mins to 2 hrs. Migraine headaches--usually throbbing on one side, alternating sides, worse with light or noise--may last for a few hours (usually at least 4) and persist for weeks. Migraine with aura is accompanied by flashes of light, numbness or tingling in body and speech problems. Migraine-type or tension headaches can be triggered by strenuous activities or motion sickness and occur more frequently in changing weather conditions (rising hot or humidity) or high altitudes (oxygen deficiency or high level of CO2 in blood), and among those who have a personal or family history of migraines. Other triggers include specific food ingredients, medications, under-eating, dehydration, overextending yourself, fatigue, poor posture, strong smells, noises and lights, emotional stress, hormonal changes and infections.