Weird disorder, any one seen anything like this? - The Horse Forum
LinkBack Thread Tools
post #1 of 44 Old 01-24-2013, 08:55 PM Thread Starter
Join Date: Jan 2012
Location: New Mexico
Posts: 264
• Horses: 2
Weird disorder, any one seen anything like this?

My neighbor's horse Star, has developed a condition that is currently stumping three vets. One week ago he started with diarrhea, then began developing skin lesions that oozed sticky yellow serum until it hung off Star's coat in icicles all along the horse's topline and chest. Vet #1 put Star on a round of anti-biotics and gave him a medicated bath. Seven days later, the horse's condition has changed very little, the serum dripping has reduced some, but he has also developed severe swelling in his chest that seems to be draining down into the fore legs above the knees. When the weepy areas are disturbed(washing, rubbing) the hair peels off in chunks, the skin beneath is flaky and dry.

Vet#2 is a good friend of mine, we talked at length over the phone and I sent him blurry photo's shown below. He had few ideas.
Vet#3 was sent the photos as well but wouldn't comment until he sees the horse in person, set appointment for Saturday.

This photo is of a patch is missing hair, and is still weeping serum.

This is Star's topline, he has been wearing a blanket, so the serum has soaked into the blanket rather than hanging in icicles like it did before he was blanketed, but the extent of the lesions can be seen.

This is a patch that has lost the hair and is no longer weeping serum.

The photos of the swelling didn't turn out very well so I didn't post them. It is winter, very cold lately, so bugs really are out of the question. The horse is 18+yo. Any Ideas would be appreciated!

I make custom horsehair jewelry at
Fargosgirl is offline  
Sponsored Links
post #2 of 44 Old 01-24-2013, 09:02 PM
Join Date: Sep 2012
Location: Alberta
Posts: 1,018
• Horses: 1
My first guess would be rainrot.
My second guess would be HERDA
sorry can't see all the pics
Spotted is offline  
post #3 of 44 Old 01-24-2013, 09:05 PM
Join Date: Nov 2011
Location: Canadensis, Pennsylvania
Posts: 2,313
• Horses: 1
I have no idea what that is, but I wouldn't want a blanket on him.

Which is kind of sucky, because it's so cold

I live to ride and I ride to live
Horses are just angels without wings
11/01/09 <3 my horse left hoof prints on my heart
Lexiie is offline  
post #4 of 44 Old 01-24-2013, 09:17 PM
Join Date: Jun 2011
Location: Australia
Posts: 5,800
• Horses: 4
Originally Posted by Spotted View Post
My second guess would be HERDA
The horse is 18+yo, HERDA usually requires them put down before they turn 4, so I disagree with this.

I also think it's likely to be rain rot, very bad rain rot at that! Although it might be something else such as an allergy [allergies present in some pretty odd ways!], I think chances are it's simpler than that.

blue eyed pony is offline  
post #5 of 44 Old 01-24-2013, 09:23 PM
Join Date: Sep 2012
Location: Alberta
Posts: 1,018
• Horses: 1
maybe if the blanket was washed with a soap, it could not be agreeing with him.
Nokotaheaven and jkm06 like this.
Spotted is offline  
post #6 of 44 Old 01-24-2013, 09:49 PM
Join Date: Dec 2010
Location: Sevierville, TN
Posts: 1,778
• Horses: 4
Whats the horse eating? What is the environment like? Any new changes?

Married to my One! 10-11-13 Steampunk style:)
Trinity3205 is offline  
post #7 of 44 Old 01-24-2013, 09:52 PM
Join Date: May 2011
Posts: 6,345
• Horses: 0
I had a horse that oozed yellow serum from bug bites, mainly ticks.
Clayton Taffy is offline  
post #8 of 44 Old 01-24-2013, 10:11 PM
Join Date: Jun 2011
Location: Canada
Posts: 2,003
• Horses: 0
does the horse still have the diarrhea? or is it primarily the skin problems & swelling now??
paintedpastures is offline  
post #9 of 44 Old 01-24-2013, 10:26 PM
Join Date: Sep 2011
Posts: 278
• Horses: 0
Has anyone considered pigeon fever?

I don't know much about it... but they can develop sores anywhere on their body :/ The oozing and swollen chest made me think strangles... probably not, but definitely something to be considered - especially since it is contagious.

Here is a link from the AQHA:
HeatherGavitt likes this.

Last edited by sillyhorses; 01-24-2013 at 10:29 PM.
sillyhorses is offline  
post #10 of 44 Old 01-24-2013, 10:35 PM Thread Starter
Join Date: Jan 2012
Location: New Mexico
Posts: 264
• Horses: 2
Actually Vet#2 said that this reminded him a lot of HERDA, the only thing that didn't fit was the horse's age.

We also discussed rain rot, but Star has been on strong antibiotics (both topical and ingested) for a full 7 days now, with little improvement, in fact the swelling in his chest started AFTER the antibiotic treatment. Our environment also is not conducive to rain rot, we live in the desert and are experiencing a drought.

The diarrhea is still persisting. The horse was not blanketed until the skin condition started, vet#1 recommended the blanket.
Star lives in a small paddock with a really nice run in shed that is sheltered on all four sides, he gets turn out into 2 acres of dry lot every other day. He eats grass hay with Equine Senior, there was a change a new hay supplier recently, I'll have to ask to see if it corresponds to the timing of his coming down with this.

If this is an allergy, it is the wildest reaction I have ever seen in a horse!

I make custom horsehair jewelry at
Fargosgirl is offline  

Quick Reply

Register Now

In order to be able to post messages on the The Horse Forum forums, you must first register.

Already have a Horse Forum account?
Members are allowed only one account per person at the Horse Forum, so if you've made an account here in the past you'll need to continue using that account. Please do not create a new account or you may lose access to the Horse Forum. If you need help recovering your existing account, please Contact Us. We'll be glad to help!

New to the Horse Forum?
Please choose a username you will be satisfied with using for the duration of your membership at the Horse Forum. We do not change members' usernames upon request because that would make it difficult for everyone to keep track of who is who on the forum. For that reason, please do not incorporate your horse's name into your username so that you are not stuck with a username related to a horse you may no longer have some day, or use any other username you may no longer identify with or care for in the future.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Old Thread Warning
This thread is more than 90 days old. When a thread is this old, it is often better to start a new thread rather than post to it. However, If you feel you have something of value to add to this particular thread, you can do so by checking the box below before submitting your post.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Perplexing problems with my horse - eating disorder gabi kennedy Horse Health 10 10-26-2012 04:34 AM
A Horse With Multiple Personality Disorder? Cinnys Whinny Horse Talk 14 03-18-2012 01:17 PM
Obsessive CANTER Disorder rissaxbmth Horse Training 4 03-27-2011 04:59 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome