|All three animals had pelvic fractures associated with vehicular trauma. 3-4 weeks after trauma they developed alopecia and dermatopathy with acute hair loss, glistening appearance of the skin and erosions of the lower back.
Histopathology showed an atrophy of the hair follicles and adnexal structures, follicular telogenization, dermal fibroplasia and mild lymphocytic infiltrate, fibroplasia and panniculitis.
Vascular damage secondary to the extermal trauma to blood vessels supplying the skin over the lumbar region and aubsequent ischemia might explain the pathomechanism of this alopecia.
Focal permanent alopecia is expected in these areas.
Source: Declercq, jan (2004): Alopecia and dermatopathy of the lower back following pelvic fractures in three cats. In: Veterinary Dermatology 2004, 15, pp 42-46