[header] How to know if you have anxiety [title] Watch for episodes of excessive or intense worry. [step] Perhaps the most characteristic feature of anxiety is a long-lasting or intense feeling of dread and tension. Sufferers of anxiety often find themselves worrying constantly, even when they have nothing in particular to worry about. 
Worrying is often accompanied by physical tension and jitteriness, and is characterized by a pessimistic attitude, and an anticipation of the worst outcome in the situation causing the worry. [title] Identify feelings of blankness or being unreal.