White Spots

I have owned my 5 year old Quarter Horse mare since she was 10 months old. She was solid chestnut until about three month ago when she suddenly started developing a star on her forehead. The only exception ...I have owned my 5 year old Quarter Horse mare since she was 10 months old. She was solid chestnut until about three month ago when she suddenly started developing a star on her forehead. The only exception ...

Story originally posted by Horsecity.com Staff

Dr. Lowder:

I have owned my 5 year old Quarter Horse mare since she was 10 months old. She was solid chestnut until about three month ago when she suddenly started developing a star on her forehead. The only exception was a white spot on her wither that came on when she was about 1-1/2 years old following a fly bite. She lost the hair on a small area and it grew back as white hair. This year as she lost her winter coat she started showing white spots ranging from half inch to three-quarters of an inch in size on her legs. Several weeks ago I sent her to a breeding clinic to be artifically inseminated and a week later when I went to pick her up she was covered in spots. One of the staff even asked me if she was Appaloosa. What may have caused this sudden change in pigment? I’ve heard that some foundation bred Quarter Horses develop spots that may come and go. It’s also been suggested that this may be a form of dermatits. Please share your thoughts about this.

Thank you,
Patty Paus

Dr. Lowder