(How to treat anxiety disorders)Anxiety is a worry about future events, and fear is a reaction to current events. Anxiety disorders are therefore a group of mental disorders characterised by significant feelings of anxiety and fear and, these disorders differ by what results in the symptoms.
The cause of anxiety disorders is a combination of genetic and environmental factors. Risk factors include a history of child abuse, family history of mental disorders, and poverty.
Other problems that may result in similar symptoms include hyperthyroidism; heart disease; caffeine, alcohol, or cannabis use; and withdrawal from certain drugs, among others
People often have more than one anxiety disorder. These feelings may cause physical symptoms, such as a fast heart rate and shakiness. There are a number of anxiety disorders including generalized anxiety disorder, specific phobia, social anxiety disorder etc.