As it is a therapy that directly treats the most sensitive soft tissues, performing it in the wrong way can have very negative consequences for the patient. In the mildest cases, muscle pain similar to DOMS or stiffness will be felt after training, as well as numbness and tingling, while more serious scenarios can generate nerve damage, especially if a delicate area such as the spine has been treated, and even thrombosis.
That is why it is necessary that the massage be performed by expert and trained hands such as those of a physiotherapist or kinesiologist, since not all massages are valid for all people and ailments. That is why you should have a professional to make an accurate diagnosis and then determine the ideal type of massage to solve each ailment or problem.