Category: Functional disorders

Functional illnesses, such as Irritable Bowel Syndrome (IBS) or Chronic Fatigue Syndrome (CFS), affect a significant portion of the population and involve genuine, distressing symptoms. Understanding **what are some causes of functional illnesses?** is crucial, as their origins are often a complex interplay of biological, psychological, and social factors rather than a single, identifiable structural issue.

According to the National Health Service, many people experience persistent physical symptoms like pain or dizziness that doctors cannot fully attribute to an underlying medical condition. These symptoms are very real and can be debilitating, raising the crucial question: What are physical symptoms that have no physical cause?