A nurse is collecting data from a client who reports cessation of nicotine use. Which of the following manifestations should the nurse expect? (Select all that apply)

Introduction: Nicotine withdrawal occurs when an individual dependent on the substance undergoes abrupt cessation of nicotine intake. This leads to a complex syndrome of neuroendocrine and physiological disturbances caused by the sudden drop in acetylcholine and dopamine levels within the cerebral reward pathways, specifically the nucleus accumbens. A. Weight gain is a hallmark manifestation of nicotine withdrawal. Nicotine acts as a metabolic stimulant and an anorexiant. Upon cessation, the basal metabolic rate may decrease slightly, and the individual often experiences a significant increase in appetite and caloric intake, leading to measurable gain in adipose tissue. B. Restlessness is a common neurobehavioral symptom of nicotine withdrawal. The absence of the substance’s calming effect on the central nervous system leads to psychomotor agitation and irritability. This occurs as the brain's neurochemistry attempts to recalibrate its excitatory and inhibitory balance without the external influence of nicotine. C. Decreased appetite is incorrect because nicotine withdrawal typically causes hyperphagia or increased appetite. Nicotine normally suppresses insulin and activates pro-opiomelanocortin neurons in the hypothalamus to reduce hunger. Once nicotine is removed, these pathways become more active, significantly increasing the client's desire for food and frequent snacking. D. Difficulty concentrating is a classic cognitive impairment associated with nicotine withdrawal syndrome. Nicotine enhances prefrontal cortex activity and cholinergic neurotransmission, which aids in focus. Withdrawal disrupts these cognitive processes, leading to mental cloudiness, decreased attention span, and diminished performance on tasks requiring sustained cognitive effort or memory. E. Diarrhea is not a standard symptom of nicotine withdrawal; instead, many clients experience constipation. Nicotine is a stimulant that increases gastrointestinal motility via the parasympathetic nervous system. Removing this stimulus often leads to decreased peristaltic activity and bowel sluggishness rather than the hypermotility required to produce diarrheal stools.