Of all the physical woes attributed to the bicycle as it became popular in the 1890s, the one that most strained credulity was the “bicycle face,” writes Margaret Guroff, author of bicycle's history book "The Mechanical Horse. How the Bicycle Reshaped American Life".
Characterized by wide, wild eyes; a grim set to the mouth; and a migration of facial features toward the center, the disorder was said to result from the stress of incessant balancing, says historian.
A German philosopher claimed that the condition drained “every vestige of intelligence” from the sufferer’s appearance and rendered children unrecognizable to their own mothers.
The bicycle face hung on, too, warned a journalist: “Once fixed upon the countenance, it can never be removed.”