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.
1 For example, Garden City Hospital in Michigan charges $100 per session. 2  ECS Therapy in Pennsylvania charges $200 for an initial assessment, then $65 per half-hour session -- or $130 per hour. 3  Therapy Playground in North Carolina charges $100 for a half-hour session -- or $200 an hour. For patients covered by health insurance, typical out-of-pocket costs consist of coinsurance of 10%-50%. 2  For patients not covered by health insurance, speech therapy typically costs $200-$250 for an initial assessment, then about $100 to almost $250 per hour.