Congenital hypotrichosis in a Percheron draught horse.
A blue roan Percheron foal was born with poorly circumscribed patchy alopecia of the trunk and legs. Teeth and hoof development were normal. Alopecia was progressive, becoming almost complete by 1 year of age. Histopathological findings in a skin biopsy obtained at 7 months of age were consistent with severe follicular hypoplasia. Sebaceous glands, epitrichial sweat glands and arrector pilae muscles were normal. The horse is alive and otherwise well at 6 years of age, although adult stature is considered small for this breed. The clinical history and histopathological findings are most consistent with a form of congenital hypotrichosis.
Valentine
B A
BA
Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, Oregon 97331, USA. Beth.Valentine@orst.edu
Hedstrom
O R
OR
Miller
W H
WH
Scott
D W
DW
Mathies
S
S
D000818:Animals; D003937:Diagnosis, Differential; D006734:Horse Diseases / Q000151:congenital* / Q000175:diagnosis* / Q000473:pathology; D006736:Horses; D007039:Hypotrichosis / Q000151:congenital / Q000175:diagnosis / Q000662:veterinary*; D007866:Leg; D008297:Male