d. Drugs are substances used in the treatment of disease. They are used to
relieve the unpleasant effects of disease and to eradicate the disease. Drugs may be
administered externally and internally.
e. Radiotherapy is the use of x-rays, radium, and radioactive isotopes in the
treatment of disease.
f. Occupational therapy is treatment that provides a patient with activity to keep
his mind and body occupied. It is also used to help the patient regain muscular
coordination and control of specific parts of the body.
g. Physical therapy is the treatment of disease by physical means. Various
agents used in physical therapy are light, heat, cold, electricity, water, massage, and
h. Psychotherapy is treatment by various means, which may include the use of
drugs, to lessen or rectify abnormal mental conditions. Surgery performed for the same
purpose is called psychosurgery.
i. Surgery is the treatment of disease by manual operation or corrective
apparatus. It includes the removal of diseased tissue or organs and the repair of injured