Definition: In relation to a form of a disease, condition, ailment or defect, means a form of the disease, condition, ailment or defect that is: (a) Generally accepted as not being appropriate to be diagnosed or treated without consulting a suitably qualified health care professional; or (b) Generally accepted to be beyond the ability of the average person to evaluate accurately, or treat safely, without regular supervision by a suitably qualified health care professional.
As per: TGA