My horse had a skin problem, that my vet had said was a sarcoid. It
stayed relatively flat and maybe got a little bumpy at times. He had it
for several years (bay colored horse).
About a year or so ago, I started feeding flax seeds. Several months
later I noticed that hair was starting to grow where the "sarcoid" had
been. Nothing else had changed in their feed program.
The omega fatty acids (?) in the flax seeds seemed to have helped in this
particular (statistically insignificant) case.