Which type of disorder is characterized by excessive worry combined with restlessness and fatigue?

The type of disorder characterized by excessive worry, along with symptoms such as restlessness and fatigue, is generalized anxiety disorder (GAD). This condition is defined by persistent and excessive anxiety about various aspects of life, including health, work, and social interactions, occurring more days than not for at least six months. Individuals with GAD often find it difficult to control their worry, which leads to notable distress and impairment in functioning.

Restlessness is a common symptom associated with GAD, where individuals may feel keyed up or on edge. Fatigue commonly results from the mental strain caused by constant worrying and the body's heightened state of arousal. Both these symptoms are integral to the overall picture of GAD, distinguishing it from other anxiety disorders that manifest differently.

Panic disorder involves sudden and recurrent panic attacks and is characterized by intense fear or discomfort that peaks within minutes, but does not typically present with the chronic worry aspect seen in GAD. Social anxiety disorder focuses on the fear of social situations and performance situations, leading to avoidance behavior, rather than the broad and excessive worry across multiple domains evident in GAD. Obsessive-compulsive disorder involves intrusive thoughts and compulsions that may lead to anxiety, but the nature of the worry is specific to the obs