Catalog
Primary yaws
Link to WHO Definition
Primary yaws – http://id.who.int/icd/entity/3933330
Primary yaws results from primary inoculation of Treponema pallidum subsp. pertenue into the skin, manifesting 2-12 weeks later as a localised papule (initial, primary or ‘mother' yaw) before developing into a large non-tender ulcerating nodule, often resembling a raspberry (hence the name ‘framboesia’). The primary lesion is most commonly located on the legs and ankles may also be found on the buttocks, arms, hands, and face. It usually heals after 3–6 months and is still present at the onset of the secondary stage in only a minority (9-15%).