The invention relates to a medical use of water exerting a hydrostatic pressure higher than 1.1 bar, completely surrounding and affecting a patient's organism under total submergence, for use in prophylaxis, physiotherapy, rehabilitation and therapy of disorders, defects and injuries of skeletal system, arthroskeletal system, musculoskeletal system and other body systems such as circulatory system, nervous system, immune system, as well as pain conditions, such as migraine, myalgia and neuralgia, skin diseases, fertility disorders, potency dysfunctions, as well as overweight, obesity and defects of posture. According to the invention the hydrostatic pressure of water is preferably higher than 1.2 bar, and the patient is human being. The invention is of a particular importance in rehabilitation and therapy that follows after aesthetic medicine treatment, after surgeries, after physical injuries of motor system. The solution according to the invention is advantageously used in combination with procedures of classic hydrotherapy, manual therapy, kinesitherapy or combination thereof. It is of a particular benefit to provide air, mixture of gases of a composition different to the composition of air, mixtures of air and oxygen or pure oxygen for breathing (hyperbaric oxygen therapy HBO/HBOT), while the water may be supplemented with various additives appropriate for the kind of an ailment treated, such as mineral, gaseous, herbal, antiinflammatory, antimicrobial including antibacterial additives.