Horsehair worms are one of the most common parasites found in nature, and also one of the most misunderstood. Between the myths that surround them, as well as the vast claims that many make about them, this article intends to clear up any of the misinformation about horsehair worms, particularly their relationship to humans.

The horsehair worm looks like the thin hair of a horsetail. Horsehair worms are typically dark brown in color, but some are tan, yellow or black. They usually peak during the late summer as well as during the fall months.