During benzodiazepine withdrawal the individual may experience muscle twitching and seizures
Studies indicate that marijuana can produce a range of transient psychotic symptoms and cognitive deficits, such as deficits in learning, short-term memory, working memory, executive function, abstract ability, decision-making and attention.
Some of the worst prescription drug withdrawal symptoms documented are for the drug Cymbalta (an anti-depressant), which are sometimes referred to as "nightmare-ish" because of how intense they can potentially be.
Marijuana was responsible for over 18% of the emergency room visits in 2009 for patients who were seeking detox or substance abuse treatment as the reason for their visit.