Alcohol withdrawal begins about ____ hours after the last alcoholic drink. Tremors, sweating, insomnia, elevated blood pressure, and tachycardia are common symptoms early in the presentation of alcohol withdrawal due to the removal of the ethanol as a __________ leading to overexcitation of the central nervous system. Patients also may complain of nausea, anxiety, and headache.
a. 6-12
b. 12-24
c. 24-48
d. 48-72

a. depressant
b. stimulant
c. sedative
d. hallucinogen