Mood swing is an abrupt change in emotional state or mood. It can be normal, and is only an indicator of underlying disease when feelings become excessive and interfere with daily living.
On the other hand, bipolar disorder, also known as manic depression, is a mental illness that brings severe high and low moods and changes in sleep, thinking, energy and behavior.
Mood swings can be a part of bipolar disorder, but every mood swing does not reflect bipolar disorder. The difference between mood swings in normal people and that between bipolar disorder is duration and severity.
In normal people, mood swings usually don’t affect your lifestyle much. If you are going through one, still you can go to work, see your friends, watch movies, take care of your children and everything but in the case of mood swings of a bipolar disorder sufferer, it disrupts their life, sometimes completely. You could be so depressed that you won’t get out of your bed, even this may make you think your life is worthless. You act as a complete maniac.
So there are fairly dramatic differences in mood swings of normal people and those with bipolar disorder.
There’s a strong belief that bipolar disorder can be cured through appropriate diet and exercise which is totally untrue. Bipolar actually has no cure, however it can be managed through proper medication and psychotherapy. It is important to consult with a health care provider if someone is having more mood swings than usual, especially when it seems to be out of control.
Many people take it lightly, comparing it it just with a mood swing but in reality a patient undergoes an extreme change in energy, activity, sleep and mood which sometimes may lead to anxiety, self harm, suicide and even substance use disorders.