Overview 

Concentration difficulty is a decreased ability to focus your thoughts on something. Concentration difficulties can be related to difficulty staying awake, impulsiveness, intrusive thoughts or concerns, overactivity, or inattention. They can be caused by medical, cognitive or psychological problems or may be related to sleep disorders or medications, alcohol or drugs.

Symptoms

Being unable to concentrate affects people differently. Some symptoms you may experience include:

• being unable to remember things that occurred a short time ago
• difficulty sitting still
• difficulty thinking clearly
• frequently losing things or difficulty remembering where things are
• inability to make decisions
• inability to perform complicated tasks
• lack of focus
• lacking physical or mental energy to concentrate
• making careless mistakes