Nairobi, March 25 -- For six months, I have had a problem sleeping, and now, no sleeping tablet seems to help. My doctor has suggested a psychiatric evaluation. Is that a good idea?

The simple answer to your question is a most emphatic yes. You should, to the extent possible, accept the professional opinion of the expert you have chosen for yourself, unless you choose to seek another professional opinion from yet another expert.

This general point having been made, we must look at you and your case to better understand why we got to where we are. It has been six months since the problem started and you have, like most people do, started to self-medicate, before consulting the doctor. This habit of self-medication is most understandable ...