Sudden, extreme fatigue can occur due to various medical conditions, including diabetes, depression, and fibromyalgia. Treatment varies depending on the cause. This article explores what triggers ...

As a symptom, fatigue is a tough one. Fatigue is defined as tiredness, exhaustion, or lack of energy precipitated by exertion or stress, says Andrew Patane, MD, an internal medicine doctor at NYU ...

Although feeling more tired can be a typical part of aging, unexplained or extreme exhaustion warrants a medical checkup. When an older person suddenly can’t get out of bed or displays unusual or ...