Published online by Cambridge University Press: 06 October 2014
Difficulties can arise in correctly diagnosing clients who present with mood and anxiety disturbances. Unless a detailed history is taken and a comprehensive interview performed, errors of diagnosis are likely to occur which may result in aversive consequences. To illustrate this likelihood, two cases of persons exhibiting anxiety and mood disturbance are briefly reported. The first case involved a prior diagnosis of psychogenic disorder (Mood Disorder). However, further investigation of the client's symptoms revealed that the anxiety and depression were secondary and caused by an underlying organic disorder. The second case involved a prior diagnosis of a physically based disorder presenting with anxiety and depression (Multiple Sclerosis). However, further investigation of the client's symptoms revealed that the somatic symptoms were secondary and the mood and anxiety disturbance were primary symptoms. A model is presented as a guide to better understand the diagnostic process, comments upon the need for a detailed history and interview are offered, and problems arising from incorrect diagnoses are discussed.