Apaloosa colt developes rainrot

I have a 20 month Appaloosa colt and he has rainrot. We have tried everything to get it off. Nothing has worked. We are probably going to shave the covered area. Our vet says that after shaving him, we ...I have a 20 month Appaloosa colt and he has rainrot. We have tried everything to get it off. Nothing has worked. We are probably going to shave the covered area. Our vet says that after shaving him, we ...

Story originally posted by: Dr. Michael Lowder, DVM, MSUniv. of GA School of Veterinary Medicine

Dr. Lowder:

I have a 20 month Appaloosa colt and he has rainrot. We have tried everything to get it off. Nothing has worked. We are probably going to shave the covered area. Our vet says that after shaving him, we should pick the scabs off then treat him. Nikki is being kept in a stall. We do not know what to do!

Carolyn,

Dermatophilosis (rain scald, rain rot) is to due to the bacteria (dermatophilus congolensis) that is commonly seen after prolonged periods of overcast and rainy weather. Lesions are most commonly seen on the rump, loins, and back but are also seen on the distal limbs.

Treatment involves keeping the horse dry, removal of the crust (clipping works), baths (usually with a iodophor or chlorhexidine base shampoos), and in severe cases administration of antibiotics (e.g., penicillin).

Consult with your local vet about a dosage and rate of administration that is suitable for your horse as this seems to be a severe case. Remember you can re-infect the horse if your brushes and blankets are not cleaned and it is possible to acquire the infection yourself.

Good Luck,
Dr. Lowder