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	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

To the Editor: Dr Bos and colleagues¹ reported that elderly patients with nonfocal TNAs had a higher risk of major vascular disease and dementia than those without TNAs. This result suggests that lumping various signs and symptoms into TNAs was valid. The opposite approach would be to split the components of TNA and investigate each complaint on its own, but this was not done because an empirical base for subdivision did not exist. While such data may not exist for TNAs, they do for several causes of unconsciousness, a constituent of TNA.

If short-lived, such attacks are classified under transient loss of consciousness, mainly consisting of epilepsy and syncope (transient loss of consciousness due to cerebral hypoperfusion).² In elderly persons, cardiac, orthostatic, and postprandial syncope occur more often and reflex syncope less often than in young perons.³ Elderly patients tend to have multiple causes for syncope that are associated with . . . [Full Text of this Article]

J. Gert van Dijk, MD, PhD
j.g.van_dijk@lumc.nl

Roland D. Thijs, MD
Department of Neurology and Clinical Neurophysiology
Leiden University Medical Centre
Leiden, the Netherlands

Wouter Wieling, MD, PhD
Department of Internal Medicine
Academic Medical Centre
Amsterdam, the Netherlands

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