The biggest symptom of anxiety is constant worry. Physical symptoms can also happen. Research suggests that anxiety symptoms can become worse when a person is under stress. Symptoms include:

  • Constant worrying
  • Trembling and muscle tension
  • Feeling tense and unable to relax
  • Feeling tired
  • Having trouble staying focused
  • Feeling irritable or grouchy
  • Trouble falling or staying asleep
  • Feeling nauseous or otherwise physically ill when worrying

Many people with anxiety startle more easily than other people. They sometimes suffer from depression and often struggle with substance abuse as a means of self-medicating, too.