Hi and welcome to Healthcare Magic. Thanks for your question... Celexa (Citalopram) is an anti-depressant medication, usually given for depression and sometimes, for certain types of anxiety disorders. Now, you have not mentioned why you were started on these medication and for how long you were on these medication. The reason this is important is because, if you had been suffering from a depressive disorder, then it is important to complete treatment for an adequate duration, otherwise you may have a recurrence of sypmtoms. Secondly, the longer you have been on medication, the more likely are the withdrawal symptoms. 40mg (of Celexa) is a significant dose and though you have tapered it down gradually, the insomnia could still be part of the withdrawal. And you have mentioned that you have already suffered from other symptoms such as guidiness, anger / irritability, mood changes, etc. which may also withdrawal-related. Itching does not seem to be related to the medication or its withdrawal, but it could be an independent factor causing or aggravating your sleep disturbance. My advice would be to have a review with your psychiatrist, so that he would be able to assess you in detail and find out if these are indicators of a relapse of your previous psychological problems or if they are only withdrawal-related. And please refrain from self-medicating yourself, as it is always better to have an assessment by a professional and then take the appropriate and necessary treatment. All the best... - Dr. Jonas Sundarakumar Consultant Psychiatrist