Doctors donât know exactly what causes migraines. It appears that migraine headaches may be caused in part by changes in the level of a body chemical called serotonin. Serotonin plays many roles in the body, and it can have an effect on the blood vessels. When serotonin levels are high, blood vessels constrict (shrink).
Average Salary. The average annual salary for physical therapist in the United States is $86,520, which is 103% higher than the average income of Americans. The median pay for PTs is $7,210 per month, $1,663 per week and $41.59 per hour.
Cost Of Physical Therapy. The answer that has Physical Therapy at $250 per 45 min session is outrageous and not at all indicative of the profession. Whoever posted that should be ashamed. Most clinics do use a time and service-based format. Typically the most common services cost from $30-45 per 15 minute period and most visits are 45-60 minutes.