Hello Doc.. im asking this for one one my best friends.. he had few risky exposures in 2005 in mumbai ( india), and he did HIV DNA PCR after 15 days, 2 months, 3 months and 1 year from the exposure. He did ELISA test also after 6 months, 1 year, 2 years from the exposure and all the time result came as negative for both HIV1 & HIV 2. He had almost all symptems of infection in the initial stage and even now he get some strange pain on his back ( shoulder blade), knee joints of both leg and hands. the pain is not always there it is some electirc kind of mild shooting pain.. since all the above tests done in different time frame are negative, is there anything to be worried of HIV related these pains are ? please do answer sir