Altitude sickness has a mild form with lassitude and exercise difficulty.
Evidence
I am not under favorable circumstances, either for mind or body, and at present I feel a singular lassitude and difficulty in taking exercise, but this is said to be the milder form of the affection known on higher altitudes as soroche, or “mountain sickness,” and is only temporary. — Isabella L. Bird, A Lady’s Life in the Rocky Mountains, 139
Categorization
- DEFINE: Introduces ‘soroche’ / mountain sickness as a named altitude condition.