Answer:mood disorder
Explanation: this is a disorder that affects our mood. In mood disorder, a person has a distorted or disturbed mood, or mood swings. They can also be termed as certain things that disturb the human mind, making it inconsistent and irregular.
There are various kinds of mood disorder,they include depressed mood, elevated mood, bi-polar disorder and other lesser ones. Mood disorder occurs mainly due to a medical disorder or by inducement.
A serious tragic event or even a happy memorable event can cause a mood change which inturn can affect our daily living and lives forever.mood disorder are a major cause of depression.