<span>Severe depression that has a sudden onset or seems not to have any
external cause whatsoever is called major depression. Major
depression is sometimes referred to as </span>unipolar disorder or major
depressive<span> disorder (MDD); typical signs of MDD include
persistent feeling of sadness or a lack of interest in outside stimuli.</span>
Answer:
State of excitation or stimulation will keep on progressing.
Explanation:
IF dopaine is a type of neurotransmitter that is released from the nerve ending upon excitation and stimulation.
This neurotransmitter need to be removed when the work is done else the state of excitation or stimulation will keep on progressing or will be in continuous state of excitation thereby causing neural harm.
Possibly {c. 3}
hopefully that's right☝
so sorry if it's not