Maina Elisa, Colombo Silvia, Abramo Francesca, Pasquinelli Gianandrea
Servizi Dermatologici Veterinari, Cuneo e Legnano, Italy.
Vet Dermatol. 2013 Apr;24(2):289-e68. doi: 10.1111/vde.12004. Epub 2013 Feb 5.
Pili torti is a congenital or acquired human disease characterized by flattening and twisting of the hair shaft by 180 degrees. A similar condition has been previously reported in a litter of kittens with generalized hair loss, associated with systemic signs and followed by death at a young age.
A 1-year-old castrated male domestic short-haired cat was presented for noninflammatory and nonpruritic symmetrical multifocal alopecia involving the head, pinnae, forelimbs, tail and chest. The cat was otherwise healthy.
Microscopic examination of hair shafts revealed pili torti and a typical combination of anagen and telogen roots, occasionally spiral in shape, without evidence of mites or dermatophytes. Histopathological examination showed the same hair shaft abnormality, with normal epidermis, dermis, hair follicles and other adnexa. Scanning electron microscopy confirmed a hair shaft dysplasia characterized by pili torti, similar to that described in humans.
To the best of the authors' knowledge, this is the first case report of pili torti in a healthy young adult cat.
扭发是一种先天性或后天性人类疾病，其特征为毛干扁平并扭转180度。此前曾有一窝小猫出现类似情况，伴有全身性脱毛，出现全身症状，且在幼年时死亡。
一只1岁去势雄性家养短毛猫因头部、耳廓、前肢、尾巴和胸部出现非炎性、非瘙痒性对称性多灶性脱毛前来就诊。该猫其他方面健康。
对毛干进行显微镜检查发现扭发以及生长期和休止期毛根的典型组合，毛根偶尔呈螺旋状，未发现螨虫或皮肤癣菌迹象。组织病理学检查显示相同的毛干异常，表皮、真皮、毛囊和其他附属器正常。扫描电子显微镜证实存在以扭发为特征的毛干发育异常，与人类所述情况相似。
据作者所知，这是首例关于健康年轻成年猫扭发的病例报告。
