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.
At $60 per hour mean cost for individual outpatient therapy the total cost for this patient would be $540 for outpatient therapy. Total costs for various services are summed together to get a total estimate of service costs for the individual.he total minutes are then divided by the number of minutes associated with the unit cost to produce an average unit cost. A typical cost estimated might be $15 for 15 minutes of outpatient therapy.