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 ATI Physical Therapy salary ranges from approximately $15,432 per year for Rehabilitation Technician to $37,939 per year for Account Specialist. Average ATI Physical Therapy hourly pay ranges from approximately $8.59 per hour for Rehabilitation Technician to $25.94 per hour for Physical Therapist Assistant.