Extensive Cerebral Venous Sinus Thrombosis at High Altitude.

Rapid ascent to altitudes above 8,000 feet (2,500 meters) is known to be associated with acute mountain sickness (AMS), but its role as a cause of cerebrovascular disorders is rarely described. Cerebral venous sinus thrombosis is a rare and potentially fatal condition that can frequently be misdiagnosed. In this article, we report an unusual case of a 27-year-old woman who developed an extensive cerebral venous sinus thrombosis (CVST) during an expedition in the Atlas Mountains. The underlying mechanisms explaining this event will be discussed in light of this clinical observation.