atrichia congenita

https://doi.org/10.1351/goldbook.10439

Congenital baldness caused by an abnormality of the hairless gene.

Note: It may include loss of hair in early childhood, which never regrows.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 728 [Terms] [Paper]