Sedation is the reduction of irritability or agitation by administration of sedative drugs, generally to facilitate a medical procedure or diagnostic procedure. In other words, sedation is partial suppression of consciousness. In sedation patients might be “aware” of their surroundings and can still respond to certain stimuli. Some refer to the “twilight or dream state”.
General anesthesia suppresses central nervous system activity and results in unconsciousness and total lack of sensation.