Diseases and infections come in different forms and have various symptoms. But have you ever considered that your constant fatigue might be a symptom of a disease? One such transmissible disease is Mononucleosis. Mononucleosis, or Mono, is known for causing sore throat and fever but also comes with never-ending fatigue. But how long will the fatigue take to last? For that, you have to understand the causes, symptoms, and lasting duration. For same-day mono testing ...