Headache

Headache is usually caused by changes in pressure in the blood vessels feeding the brain which act on the nerves. Common causes are tension, migraine, eye strain, dehydration, low blood sugar, hypermastication and sinusitis. Migraine headache is a very strong pain which can be accompanied by nausea, vomiting, visual disturbance and vertigo. Tension headache or muscular contraction headache is usually caused by worry or stress and thought to result from chronic contraction of the muscles of the scalp and neck. Physiotherapy can relieve tension in the muscles causing the pain.