It is a bipolar disorder. It ranges from happiness to sadness. The cycle goes on for about 1 to 2 years.
They are included in a group of diseases called mood disorders.
Causes:
Genetically caused.
Stress can only initiate or increase it.
Symptoms:
Happiness:
Elated-very happy
Infectious mood=Overtly happy and losses judgement
Sadnesss:
Severe sadness
Keep away from pleasure, friends, family and hobbies.
You get suicidal thoughts
Prevention:
If your aware of the problem, you can prevent it only in the infant/initial stage.
Avoid situations that cause mood swings.
Cures:
Treatment with the psychiatrist
Help of drugs
Shock therapy