Alopecia areata, ringworm, and chemotherapy are among the most common causes of a bald spot or patch in the beard. Treatment can vary depending on the underlying cause of a bald patch in the beard.

OTC ringworm medications may help, but some cases require a prescription Medically reviewed by Leah Ansell, MD Fact checked by Nick Blackmer Medically reviewed by Leah Ansell, MD Fact checked by ...