Physical therapy often abbreviated PT, is a health care

Health care

Health care is the diagnosis, treatment, and prevention of disease, illness, injury, and other physical and mental impairments in humans. Health care is delivered by practitioners in medicine, chiropractic, dentistry, nursing, pharmacy, allied health, and other care providers...

 profession. Physical therapy is concerned with identifying and maximizing quality of life and movement potential within the spheres of promotion, prevention, diagnosis, treatment/intervention,and rehabilitation. This encompasses physical, psychological, emotional, and social well being.
Physical therapy involves the interaction between physical therapist, patients/clients, other health care professionals, families, care givers, and communities in a process where movement potential is assessed and diagnosed, goals are agreed upon, using knowledge and skills unique to physical therapists.
Physical therapy is performed by a physical therapist (PT) or physiotherapist (physio), and sometimes services are provided by a physical therapist assistant (PTA) acting under their direction.
PTs are healthcare professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions, illnesses, or injuries that limit their abilities to move and perform functional activities as well as they would like in their daily lives.