Final Video: A Roborovskii Dwarf Hamster has bite wounds
Channel: Dr David Sing
Date: 21/08/2015

For the past 3 litters, the female bites this 1-year-old male when he disturbed her when she was about to give birth to 3 kids. The bacteria in the skin spread all over the body including the nose and tail area. 

You can see he is very thin at 17g. For a 1-year-old, he would weigh at least 25 g.  Bacterial dermatitis.  Inpatient 5 days. 2 times gas anaesthesia to sedate him to pluck off the dead crusted skin. This would be very stressful if he was not sedated.
At Day 5 of inpatient, 90% of the crusts are removed and he goes home on Day 7 to a happy owner. 

Separate male from female dwarf hamsters if they don't get along.