I've just done abit of reaserch and found this
Breeding season alopecia.
This is extremely common and is seen in the male and female although more common in the jill. It occurs typically from March to August with the coat growing back in the autumn. You must remember that some adrenal tumour cases do the same at first then fail to grow back so always consider adrenal tumour when looking at this condition. The hair loss is symmetrical affecting the tail, perineum, belly, rump and occasionally the feet and around the eyes. The ferrets are otherwise healthy.
It sounds as if this is w