I take it the witches brew worked for you!Yup. I agree..mites! In addition to Ivermec, spray the effected areas with the following concoction...
2/3 pint mineral oil
1/5 pint DMSO
8 ml ivermectin
5 cc gentamycin (this is Rx - I use LA200)
Spray every 3 days till completely healed and hair starts growing.