Diazepam is an anti-convulsant and anti-anxiety drug under the class of benzodiazepines. Benzodiazepines are GABAa receptor agonists wherein it promotes the inhibitory function of GABA (which primarily is a depressant) therefore relieving anxiety symptoms. In benzodiazepine withdrawal, there are many symptoms such as sleep disturbance, increased tension, panic attacks, etc. In this question, the correct answers would be "headache", "increased anxiety", and "tremors".
