Like doctors and nurses, most medical, clinical, and therapeutic providers must have a state license or certificate. In most countries, this is no different for masseuses.
Certified massage therapists must have at least 500 hours of coursework. The VET courses cover a wide range of topics and information such as anatomy, physiology, ethics, pathology, and others.
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Many massage therapists who have practiced for many years may not need to meet all the requirements. Depending on whether new laws have been passed, some masseuses might become "grandfathered" as well.
Massage therapists who need to be certified such as doctors need ongoing training to maintain their certification or reappear every four years. Oftentimes, the masseuse had to go to another state and complete more coursework.
There are many different types of massage therapy and many considerations a massage therapist should take into account when dealing with clients. Circulatory problems, problems with the nervous system, lymphatic system, pregnancy, and many others.
As a client, of course, you want someone qualified and certified as a therapist, and not someone inexperienced who could put your health at risk. The therapist, who needs ongoing training in massage, demonstrates that he is committed to the well-being of his client and his professional behavior.