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EFHD is the abbreviated form of Eratic Facial Hair Disorder, which is identified by sparse patches of hair dispersed in undefinable patterns on the face.

Although, EFHD is most commonly found in males, ages 13-18, it has been known to curse certain males well into middle age.
Carson can't grow a beard, he suffers from EFHD.
by Tattoosleeve May 23, 2009