17 Symptoms of Immune System Problems

Low-grade fever

An unexplained fever without any other symptoms is often ignored. But this is one of the most difficult symptoms to treat. The problem is that a fever can be linked to many diseases, and autoimmune ones are among them.Do not despair if you have noticed any of these symptoms. There can be other reasons for them. But the first thing you should do is visit a doctor. It is better to be safe than sorry!