Symptoms of depression include depressed mood, loss of interest and enjoyment, reduced energy, reduced self esteem and self confidence, ideas of guilt and unworthiness, bleak and pessimistic view of the future, ideas or acts of self harm or suicide, disturbed sleep and diminished appetite.

Recurrent attacks of severe anxiety (panic) which are not restricted to any particular situation or set of circumstances and therefore unpredictable.

The essential feature is anxiety, which is generalized and persistent but not restricted to any particular environmental circumstances (i.e. it is free floating).

It is a very long standing depression of mood which is never, or very rarely sever. It usually begins early in adult life and lasts at least for several years.

In this group of disorders, anxiety is evoked only, or predominantly, by certain well-defined situations or objects (external to the individual) which are not currently dangerous. As a result, these situations or objects are characteristically avoided or endured with dread. Some of the phobias are Agoraphobia (fear of open spaces or crowds), Social phobias, Specific phobias (as with animals, height, thunder, darkness etc.).

The essential feature of this disorder is recurrent obsessional thoughts or compulsive acts. Obsessional thoughts are ideas, images or impulses that enter the individual's mind again and again in a stereotyped form. Compulsive acts or rituals are stereotype behaviors that are repeated again and again.