Nairobi, Sept. 16 -- Q "My 54-year-old aunt was successfully treated for a mental breakdown two years ago though the doctor warned that we keep watch just in case of a relapse of the condition. What may cause such a condition to recur?"

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As most readers of this column already know, there are almost 300 recognised mental disorders in the main classification systems. It is, therefore, important for us to know which of those conditions your aunt might have been treated for. This is crucial because, some mental disorders are very common while others not. Some get better with minimal effort and others are chronic and tend to be more difficult to treat. Most require careful follow up just like other medical conditions such as diabetes or hig...