Clinical depression is also known as Unipolar Depression and Major Depressive Disorder. It is a state of mind which has excessive emotions of grief, desperation and hopelessness. If left uncared for, depression reaches advanced stages wherein an individual's normal day to day life and functioning is thrown out of order.

A depressed person may feel exhausted, gloomy, ill-tempered, lethargic, unenthusiastic, and indifferent. Colloquially, a person feeling low is referred to as depressed, but clinical depression is a more severe condition leading to a pessimistic and negative thought flow. In its most serious form depression can lead a person to contemplate suicide.

Panic Attack
Panic attacks are short bursts of extreme fear and anxiety in an individual. A person having a panic attack may physically tremble, wobble, and also be highly confused. Giddiness, vomiting sensations, breathlessness and a sense of looming disaster may also be experienced during- a panic attack.

Some people while suffering an attack become apprehensive about getting into an awkward or embarrassing situation. Someone who has repeated panic attacks can be said to have a panic disorder. Though panic attacks seem to happen suddenly and out of the blue, they are usually caused by memories of frightful experiences, extended periods of stress or even by over exercising.

Panic attacks are usually mistaken as heart attacks by people experiencing it for the first time. Increased attentiveness (known as hypervigilance) is a characteristic effect of panic attacks. Even small changes in the body and environment are easily noticeable and perceived as threatening.

Mental Breakdown
A mental breakdown is a state of intense emotional or psychological stress but is a non-medical publicly coined word. Symptoms of a more grave mental disorder are commonly misinterpreted as a mental breakdown. A mental breakdown wreck can be more aptly described as a brief psychotic experience which is totally unrelated to reality.

People with a past history of anxiety disorders, schizophrenia, depression and obsessive compulsive disorder are more likely to have a mental breakdown. A mental breakdown will manifest itself in different forms in different individuals.

A mental breakdown can apparently be due to an inability to function or to carry out obligations at work or home or school. The disorder may also engage harsh weakness, fatigue or even catatonic posturing that leads to the in ability for a person to move.

If person is going through a nervous breakdown, it may lead to uncontrolled crying, the person might also lose happiness in all kinds of activities, heavy weight loss and weight may also increase and these factors can lead to be grave dangers. The patient might start getting sleep interruptions or even insomnia in some cases. Other problems also include making the patient to feel worthlessness, guilty and hopelessness.

Prolonged indifference to work, family, social life and friends, insomnia or vacillating sleep patterns, drastic loss or increase of appetite, paranoia and persecution syndrome, elevated self esteem, panic attacks, hallucinations and delusions, suicidal tendencies, violent display of anger, trauma flashbacks, alcoholism and drug addiction all indicative of a soon to happen or happening mental breakdown.