0 the use of light from the sun to treat medical conditions: --
Heliotherapy was used in the treatment of tuberculosis.
Heliotherapy (sun therapy) was also used to treat rickets, burns, varicose ulcers, osteomyelitis, septic abscesses, anaemia and fractures.
People with tuberculosis were treated in health resorts that specialized in heliotherapy.
Heliotherapy can help clear up the skin condition psoriasis.
The children in the photograph were recieving natural utraviolet treatment from the hot sun, a treatment called heliotherapy.