Veterinary questions? Ask a Vet for Answers ASAP
Hi there, this is Dr Linda, a UK based vet.
Congratulations to Daisy.
I'm sorry to hear not all of the little ones made it but hopefully the surviving four are doing well.
Baldness and red skin can have several causes including a bacterial or yeast infection, mites (mange as you say), an allergic reaction or something else.
Frustratingly, most of the common medicine we use isn't proven to be safe during lactation.
The safest thing to do would be to have Daisy examined by a vet who may run some basic tests (such as a skin scrape and swab) so we get an accurate diagnosis.
Treatment will depend on what is going on and may include e.g. specifci anti parasite threapty or antibiotics.
During pregnancy and lactation, the hormones often cause thing fur and fur loss, especially over the mammary glands.
This can make any skin disease more visible on the abdomen.
As the skin is red raw, we know there is more going on than just hormonal fur loss.
You're right that mange typically affects the head and ears but can affect anywhere.
As mentioned, there are other possibilities, which is why it is important we have her skin checked and start the right tretament.