What is the main symptoms of anxiety?

What is the main symptoms of anxiety?
Common anxiety signs and symptoms include:

Feeling nervous, restless or tense.
Having a sense of impending danger, panic or doom.
Having an increased heart rate.
Breathing rapidly (hyperventilation)
Sweating.
Trembling.
Feeling weak or tired.
Trouble concentrating or thinking about anything other than the present worry.

Common anxiety signs and symptoms include:
  • Feeling nervous, restless or tense.
  • Having a sense of impending danger, panic or doom.
  • Having an increased heart rate.
  • Breathing rapidly (hyperventilation)
  • Sweating.
  • Trembling.
  • Feeling weak or tired.
  • Trouble concentrating or thinking about anything other than the present worry.