Anxiety disorder is a condition where a person feels constant fear, worry, or nervousness.
Normal anxiety is temporary, but a disorder affects daily life for a long time.
Restlessness, overthinking, fear, and difficulty controlling thoughts are key signs.
Fast heartbeat, sweating, trembling, and breathing problems may occur.
Genetics, brain chemistry, stress, lifestyle, and past trauma can trigger anxiety.
Common types include generalized anxiety, panic disorder, social anxiety, and phobias.
Anxiety can affect sleep, work, relationships, and daily routine.