What is similar to chronic fatigue syndrome?

Chronic fatigue syndrome (CFS) shares similarities with conditions like fibromyalgia and certain pain syndromes. These conditions often involve a combination of physical and psychological symptoms, including chronic pain, persistent fatigue, and cognitive difficulties, commonly referred to as "brain fog" 1. While medical professionals sometimes express skepticism about these conditions due to an unclear understanding of their causes, they are considered to have a genuine neurological basis 1.