Anxiety is the main source of several different disorders viz:  Panic disorder, Phobia, Social anxiety disorder, Obsessive-compulsive disorder, Illness anxiety disorder, and Post-traumatic stress disorder (PTSD).

A mental health disorder is characterised by temporary feelings of worry, stress, traumas and fears. It may cause due Stress at work, Financial worries, death of a loved one, serious medical illness, Side effect of medications, Use of an illicit drug.

Emotional symptoms:
• Feelings of dread
• Tense and Restlessness
• Anticipating the worst and being watchful for signs of danger

Physical symptoms:
• Shortness of breath
• Sweating
• Tremors and twitches
• Headaches
• Fatigue 
• Insomnia