3. Fever
This is a very specific symptom, and it can refer to a extremely wide variety of causes, illnesses or conditions. Fever itself is never a sign of any condition in particular, but always a sign that there is something going on with your body. Usually, your body develops a fever response when it is under attack by microorganisms such as bacteria and viruses, and the purpose of the fever is to help eliminate these pernicious elements.
Tumors such as those of lymphoma can cause fever too because the body reacts to strange elements that are harmful to your health, in this case, the white cells that have gone astray and are wreaking havoc in your system. The fever caused by lymphoma can be continual or intermittent, and it often responds well to the usual medication. However, as the cause isn’t cured by fever medication, the temperature always comes back.