Rabbit losing hair

Question
My rabbit is losing her air from the neck bellow and the pink skin is showing off. could you advice me what's wrong with her?

Answer
It's possible that your rabbit is going through a molt.  Molts are a big shed that starts at the top of the rabbit and goes all the way down to the tail.  Some rabbits will lose a lot of fur.  It comes back, and there is nothing to worry about.

It's also possible that your rabbit has mites or some other health problems.  A rabbit experienced vet can determine for sure.  This site has more information on possible health health problems that can cause fur loss.  
http://www.bio.miami.edu/hare/furloss.html

If there is a health issue, treatment is pretty effective at taking care of the problem