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.
The average Medicare allowable for services is between $26 and $30 per weighted procedure, bringing a single PT session to a cost of around $100. Clinics usually charge more than the amount allowed by the insurance and write off the difference.he charge for an assessment could be $150 or more. After the assessment, the physical therapist may perform varied sets of procedures for each session. Some procedures are billable by the minute; the charge for gait training could be as high as $115 for each quarter hour, for example.