Dear Doctor Sir, I Sis is 40 years old. she got high fever on 2 September, later it is confirmed it is chikungunia, After she recovered, she got black marks on face. specially nose tip, upper lip, chin and chicks. she had darker yet very beautiful skin earlier. She still has weakness and pain in joints. Please advise if the black marks will go by its own or how long it will persist. and also about the weakness and joints pain. regards