The term witch doctor is generally used with negative terms. It is often used to imply that the healer has little or no experience or ability in medicine.
Witch doctors in Europe
The Oxford English Dictionary says that the first recorded use of this term is in 1718, in a book by Francis Hutchinson.
Witch doctors in Africa
The witch doctors in Africa are known as sangomas in Southern Africa. The Oxford English Dictionary states that the first use of the term "witch doctor" to refer to African shamans (i.e. medicine men) was in 1836 in a book by Robert Montgomery Martin (1803?-1868).
Images for kids
Shona traditional healer, or n'anga (Zimbabwe).
Witch doctor Facts for Kids. Kiddle Encyclopedia.