Physical health is the state of the body and the organs functioning condition.Social care is the relation of an illness in purview of the society and health care I think.
A physical barrier is when a person can not access the care they want or need because of a physical problem like a walking difficulty or a wheelchair access.
Depends what aspect of health care you are looking at For more info: www.home-health-care-physical-therapy.com/physical-therapy-requirements.html Marcia Oliver MSPT, CPT