Hi, Thanks for writing in. You might have recovered from ITP completely and taking omnacortil was necessary for that. Omnacortil is prednisolone which is a steroid. It was important for you to take omnacortil but when taking it for a long duration, there might be certain side effects including weakening of immunity. Since you are having fever and dry cough it is important to consider infections that can happen with reduced immunity in people like you. Gold TB test is a method to see if there is or was Tb infection anytime in the past. Since your immunity is weak therefore the result gold test needs to be taken judiciously. Mantoux test is done to know the reactivity of your immune system to TB. I suggest you also get a X ray chest and if required CT scan done. Blood culture might also be done. This will detail any focus of infection causing your fever. Treatment should be started after confirmation of diagnosis for your situation.