Hello and welcome to HCM I have read and understood your query I hope this will help you. Dengue fever is caused by DENGUE VIRUS transmitted through bite of mosquito AEDES AEGYPTI.July to Oct are the months in which the disease has peak incidence.. The virus has got 3 subtypes.. Once affected by a typical subtype of the virus causes life long immunity in our bodies..but infection with a second strain causes most severe form of the disease called dengue hemorrhagic fever..as you previously had the disease you will be knowing that disease accompanies high grade fever.. At the moment from the history provided by you I don t think that s the case.I think you should consult your local doctor.. As any febrile illness can cause muscular pains especially viral illnesses..I don t think that you are having a second attack of dengue fever..I would advise you to have a temperature record of yourself and mean while consult your GP get a full blood count investigation advised and proceed accordingly.. Mean while tab paracetamol 1 tab 3 times day will be helpful for you. I hope I answered your query You can contact me any time for more questions. Thanks Dr faeza