A 5-year-old girl has sparse, dry, and brittle hair but is otherwise healthy.
12 citations,
March 2012 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” A specific gene mutation in Japanese people can cause varying degrees of hair thinning in adulthood.
June 2021 in “International journal of research in dermatology” A boy and his father with hereditary hypotrichosis simplex were treated for hair loss, but the treatment result is unknown.
4 citations,
January 2018 in “International Journal of Trichology” A rare genetic disease causes sparse hair and early blindness due to a gene mutation.
13 citations,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Mutations in the DSG4 gene cause fragile, sparse hair in humans, mice, and rats.