The Fanhua Spring is where people take therapeutic baths in richly carbonated water for skin diseases in general and psoriasis and scalp favus in particular.
Vitiligo is a kind of frequent acquired skin disease charactered as skin pigment loss,more and more evidences indicated that immunifaction theory is close to the morbidity of vitiligo.
Jump forward to the early 1940s, in the United States Program to try and eradicate yaws in Haiti, a disfiguring skin disease that mainly affects children.