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Anxiety happens as a normal part of life. It can even be useful when it alerts you to danger. But for some people, anxiety persistently interferes with daily activities such as work, school or sleep. This type of anxiety can disrupt relationships and enjoyment of life, and over time it can lead to health concerns and other problems. In some cases, anxiety is a mental health condition that requires treatment. Generalized anxiety disorder, for example, is characterized by persistent worry about major or minor concerns. Other anxiety disorders such as panic disorder, obsessive-compulsive disorder (OCD) and post-traumatic stress disorder (PTSD) have more-specific triggers and symptoms. Sometimes, anxiety results from a medical condition that needs treatment. At least 3 key symptoms out of a possible 6 are required to make a diagnosis: restlessness or nervousness, easy fatigability, poor concentration, irritability, muscle tension, or sleep disturbance. A panic attack is a sudden episode of intense fear that triggers severe physical reactions when there is no real danger or apparent cause. Panic attacks can be very frightening. When panic attacks occur, you might think you're losing control, having a heart attack or even dying. Many people have just one or two panic attacks in their lifetimes, and the problem goes away, perhaps when a stressful situation ends. But if you've had recurrent, unexpected panic attacks and spent long periods in constant fear of another attack, you may have a condition called panic disorder.
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