In all probability, the phenomenon that you mention is what is known as night sweats, a rather common feature of tuberculosis. This is not necessarily a rise in the body's temperature, but simply excessive sweating towards the end of the day, particularly at night. Night sweats are experienced by many people and are not always an indication of a problem. In certain cases however, hormonal changes or an infection can cause night sweats; in the case of tuberculosis of course, the night sweats are caused by the infection. The problem can be quite uncomfortable, even to the point of being traumatic for the patient, as he or she regularly wakes up in the night with the bedclothes damp with sweat, and has difficulty getting back to sleep after that.
There is no real way to tackle night sweats except for ensuring that your room is properly ventilated and your body is adequately exposed to the air, so that sweat can evaporate rather than drenching your body and the clothes and sheets. On the other hand, if your fever is indeed going up at night, you may be more comfortable if you cover yourself adequately so that you do not feel cold. However, in either case, the real solution is to treat the tuberculosis infection itself. I hope that you have already visited a doctor and are being treated for tuberculosis. The disease is quite severe and can result in death or long term damage to your health. If treated promptly however, tuberculosis can be managed quite well, and the success rate of modern medical treatment is quite high. You must however be sure to follow your doctor's instructions until the infection is completely gone. Most people are averse to taking antibiotics, especially for long periods of time, and this is not without good reason. However, with tuberculosis, the infection is extremely strong, and treatment must continue for several months. In some cases, a combination of antibiotics must be continued for up to a year. There may of course be side effects, including rashes and itching, nerve damage, and liver damage. It is therefore important that your doctor is able to find the right balance between fighting the infection and keeping your body safe. Some amount of side effects is unavoidable, but if you do not have full confidence in your doctor, you should take a second opinion instead of stopping treatment on your own.
answered by M W