PT - JOURNAL ARTICLE AU - Mamede de Carvalho AU - Michael Swash TI - An error of self-diagnosis—but what was the real diagnosis? AID - 10.1136/jnnp.2009.181925 DP - 2009 Oct 01 TA - Practical Neurology PG - 284--288 VI - 9 IP - 5 4099 - http://pn.bmj.com/content/9/5/284.short 4100 - http://pn.bmj.com/content/9/5/284.full SO - Pract Neurol2009 Oct 01; 9 AB - The availability of information on the internet encourages people to explore their own diagnosis. Although more knowledge is usually a good thing, self-diagnosis in this way may not always be correct, and it can even adversely influence the medical diagnosis, as in this patient, where the underlying disorder is still uncertain. The patient illustrates the confusion and difficulty in categorising an usual clinical syndrome.