Anxiety often occurs during the early stages of schizophrenia, and it often occurs in mood disorders. However, anxiety is the central symptom in a group of disorders called anxiety disorders. General anxiety disorder includes symptoms such as jumpiness, irritability, tension, difficulty concentrating, or fatigue. People are on edge and have trouble falling asleep. Excessive anxiety and worry about activities such as work or school are difficult to control and persistent, continuing for more than a few weeks.
Panic disorder makes people panic suddenly, without cause.
They become very frightened and often think they are going to die. Heart palpitations, sweating, trembling, dizziness, chest pains, and a sense of unreality are some of the symptoms. A panic attack generally lasts a few minutes. Panic disorder may last a few weeks or months or recur over time. Anticipations of another attack can make people afraid to leave home or be alone.