Anxiety depression is an occurrence mental condition where in a person suffering becomes sad and altogether hopeless. Anxiety depression may lead an individual to be lonely, sad and fearful. This is just normal to people when a loved one dies but mostly they can not recover easily and in long process of feeling it repeatedly, even if there is no valid reason to feel this way, they are still experiencing it.
Every one can experience depression one time or another. When problem comes, you feel alone that even the universe has abandoned you, and you begin to feel lonely and depressed. Scientifically, the reason why we feel depressed is not known yet, even though certain manifestation which can aggravate the situation.