A migraine headache can be preceded or accompanied by sensory warning signs such as flashes of light, blind spots, tingling in the arms and legs, nausea, vomiting, and increased sensitivity to light and sound. They generally last for 24 hours but can last for several days or, in some cases, longer periods. Chronic headache injections are used widely to relieve many types of pain, providing relief from migraine headaches as well as from teeth grinding and chronic soft tissue pain in the head and neck area, often caused by an accident or other trauma. This treatment is covered by your Alberta Health Insurance plan. One or two sessions are usually required to determine the success of your response, but the reduction in pain from various syndromes ranges from 3 to 6 months. Following treatment, patients may return to the rest of their daily routines immediately. Please bring your Alberta Health Care card with you to your first appointment.