To renew a work permit or Visa in Thailand, you must pass a medical exam. The logic of requiring a long term visitor to the country to be deemed ‘healthy’ is easy to understand.
The logic of testing for leprosy and elephantiasis is, well, a bit dated. Fortunately I am free of the Victorian era diseases and was not found to be either a drug addict or a chronic alcoholic.
As shown on the medical certificate: