I have 2 Months old puppy. He faced severe hair fall and itchiness when he's one Month old and we've taken to VET. Puppy lost most of the hair in the body and legs. Doctor told that is scabies and given some medications such as cephalexin, permathrin, might take few weeks to recover. I followed every medication but the condition is Not improving. I see some black dots like hyperpigmentation in the skin where there's no hair. I can see some hair growth in legs. Is this a improvement? What can I do to come out of this since my puppy is struggling so much!