<s>[INST] Sir, my father had dengue fever,  his platelet count was dropping 82, then 70 and then 80, After that we have not measured, So my question to you is that in the dengue fever , is there any possibility of dropping down platelet, after increasing. As platelet increased from 70 to 80, so is there any chance of dropping down again .Age:70 yrs, Wt: 77kgs [/INST] Dengue fever is well known for dropping down of platlets. BUt usual course of the disease is such that platlets begin to drop and reach to the maximum dip point after which the again start to rise in count. Considering the barural course of the disease chances of dropping down of platlets once they are started to rise are very less. But still exact comment about it can not be given as in few cases thye again may drop because of the dengue itself or alterbnatively by the infection by some anoter virus. So it is better to keep a close watch on patients condition & any kind of bleeding any where from the body should be reported to the treating physician. For this reasons repeated counts of platlets are done. So considering the same there are very few chances of droping down of platlets again, but you have to be cautious. </s>