National Library
of Medicine classifies alternative medicine under the term complementary therapies.
This is defined as therapeutic
practices which are not currently considered an integral part of
conventional allopathic medical practice. They may lack biomedical
explanations but as they become better researched some, such as
physical therapy, diet, and acupuncture, become widely accepted whereas
others, such as humors or radium therapy, quietly fade away, yet are
important historical footnotes.
Therapies are termed as Complementary when used in addition to conventional treatments and as Alternative when used instead of conventional treatment.