lorazepam should help with the presentation, it's an anxiolytic that is effective in the short term treatment of anxiety, citalopram should help in the long term as it has anxiolytic qualities, meaning it can be effective in the treatmnet of anxiety as well as depression. Citalopram may take a while to get into your system so you won't see any effect immediately, unlike lorazepam which is quick acting, let us know how you get on