Some researchers believe that addictive disorders, such as substance use disorders and binge eating, may stem from malfunctions in natural brain systems for pleasure and well-being. People genetically predisposed to this syndrome may crave whatever provides that missing pleasure or relieves negative feelings.

A. pleasure center
B. nucleus accumbens
C. reward deficiency
D. homeostatic

Reward deficiency.

Explanation:

Reward deficiency syndrome is a disorder that is caused inadequate neurotransmitters. This disorder can arise due to genetic and environmental factors. Individual with this disorder exhibit compulsive behaviours and a wide range of addictions.

Reward deficiency syndrome leads the individual to crave for something that relieves them from a negative feeling. Individuals who suffer from this syndrome are unable to derive pleasure from the normal everyday activities.

Alcoholism, drug abuse and other negative behavior may arise from reward deficiency syndrome.