One of the allied health professions is physical therapy (PT), commonly known as physiotherapy. Physical therapists use physical examination, diagnosis, prognosis, patient education, physical intervention, rehabilitation, illness prevention, and health promotion to promote, maintain, or restore health. In many countries, physical therapists are referred to as physiotherapists. Other components of the physical therapist profession include research, education, consultancy, and health administration, in addition to clinical treatment. Physical therapy can be used as a primary care treatment or in conjunction with other medical treatments. Physical therapists in some jurisdictions, such as the United Kingdom, have the authority to prescribe drugs. Physical therapy treats illnesses or injuries that impede a person's ability to move and perform daily activities. To arrive at a diagnosis and establish a management plan, PTs evaluate an individual's history and physical examination, as well as the results of laboratory and imaging procedures such as X-rays, CT scans, or MRI findings, if needed. Electrodiagnostic testing (such as electromyograms and nerve conduction velocity tests) may be used as well.