In simple words: Yaws is a long-lasting infection that mainly affects children in tropical regions with poor sanitation. It causes sores on the skin, and if not treated, can lead to bone and joint problems and disfigurement.

Yaws is a chronic infectious tropical disease caused by the bacterium Treponema pallidum pertenue. It primarily affects the skin, bones, and joints, often starting with a painless papilloma that can ulcerate.If left untreated, it can progress to multiple skin lesions, bone pain, and potentially disfiguring bone and joint damage.

Example 1: A 10-year-old child living in a rural tropical village presents with a large, raspberry-like sore on their leg, along with several smaller sores on their arms. Microscopic examination of a sample from the sore confirms the presence of Treponema pallidum pertenue, leading to a diagnosis of yaws., A young adult who grew up in a tropical region with poor sanitation experiences recurring bone pain and joint swelling. They have a history of skin lesions as a child, which were never formally diagnosed.After a thorough examination and testing, they are diagnosed with late-stage yaws., A healthcare worker providing aid in a tropical community notices a child with a distinctive skin lesion. Suspecting yaws, they conduct a rapid point-of-care test, which confirms the diagnosis.The child is then treated with a single dose of azithromycin.

Documentation should include the location and description of skin lesions, presence of bone or joint pain, patient's travel history and living conditions, and results of any laboratory tests (e.g., darkfield microscopy).Detailed clinical findings supporting the diagnosis of yaws are essential.