Hives & Skin Allergies

A sarcoid is a nonmalignant but locally aggressive tumor most often seen on the head, belly, groin, and legs. The most common are verrucous, with a warty look, or fibroblastic, which resembles proud flesh. Bovine papilloma virus (BPV) is probably a causative factor in sarcoids, and a 2010 study of 222 horses at the University Equine Clinic of Bern identified a possible genetic basis for sarcoid development in horses as well.


The 'Skinny' on Skin Conditions

February 01, 2010

Diagnosing skin diseases is probably one of the greatest challenges to horse handlers and veterinarians alike. ... Read More


Equine Hives: Easy Diagnosis, Often an Elusive Cause

December 14, 2009

Hunting down the cause of hives is often a challenge. Domenico Santoro, DVM, is a dermatology resident at the University of Illinois Veterinary Teaching Hospital in Urbana. He explained that urticaria, the medical term for hives, "are flat... Read More


Study: Topical Allergy Cream Can Produce Systemic Effects in Horses

November 10, 2009

Glucocorticoid cream applied at normal doses onto healthy equine skin will be quickly absorbed into the body"s system and can generate adverse systemic effects, said German researchers in a new study report. As a result, it can also... Read More


Monitoring Horses after Plasma Transfusions Recommended

June 06, 2009

Plasma is widely administered to horses and foals for a variety of reasons, such as a critical illness, failure of passive transfer in foals, or prophylaxis against Rhodococcus equi. ... Read More



August 15, 2008

Horse owners often refer to these bumps as feed bumps, protein bumps, or heat bumps, since these terms describe some causes of hives. Usually, an allergic reaction remains localized to the skin, but if clinical signs persist or are not arrested early... Read More


Hives: Identifying the Source

July 31, 2008

For the one-time occurrence of hives, you might never discover the incriminating source. However, if hives recur, you might be motivated to track the allergen. Start by mentally reconstructing any changes in diet, environment, medications,... Read More


Anatomy and Physiology

April 04, 2008

Basic terminology of equine anatomy and physiology and comparison of horses and humans.... Read More


Researchers Itching to Find New Equine Skin Allergy Tests

October 27, 2007

Researchers are trying to find better ways to test for skin hypersensitivities in horses for improved relief. ... Read More


Dermatology Review

July 29, 2007

Skin ailments were broken down into classifications of pruritic (itching), nodular, or crusting lesions. The variety of problems discussed included common equine skin diseases like sarcoids, insect hypersensitivity, hives, allergies, photosensitivit... Read More


Seabiscuit Statue Returned Home After 55 Years

June 27, 2007

Descendants of the owner, trainer, and jockey of Seabiscuit paid tribute to the legendary American racehorse June 23 as a life-sized bronze sculpture of the horse was unveiled and formally dedicated at Ridgewood Ranch in Willits, Calif.... Read More


Different Origin of Insect Hypersensitivity in Icelandics?

October 23, 2006

Insect bite hypersensitivity might have a different origin in Icelandic horses than in horses of other breeds.... Read More


Testing for Insect Hypersensitivity

September 14, 2006

Allergy testing is done in many species, including horses and humans. Unfortunately, testing to determine a horse is hypersensitive to insect bites is difficult. This disease (insect hypersensitivity) occurs seasonally, in horses of all ages and bree... Read More


Skin Hypersensitivity (ACVIM 2006)

September 13, 2006

There are three categories for hypersensitivity (non-insect-bite related) skin diseases. These include food allergies, atopic dermatitis (a predisposition to allergic disease in response to environmental allergens), and contact allergies caused by... Read More


Allergic Reactions: Types and Treatment

December 01, 2004

An allergy is a condition in which the body reacts adversely (locally or systemically) to a certain substance.... Read More


Skin Problems in Horses: The Creeping Crud

May 01, 2004

Dealing with skin problems, unfortunately, is part of having a horse. Since skin is the largest organ of the body, it's no wonder there's much that can go wrong. Designed to safeguard internal organs from external forces and to help maintain consiste... Read More


Common Skin Problems

March 01, 2003

We used to call it the "creeping crud"--a colorful, youthful label applicable to any gross-out skin disease the horse happened to have (and not to be confused with the cold-and-flu-like symptoms in humans that earned the same appellation).... Read More


Common Skin Issues for Horses

September 17, 2001

 The horse's largest and most visible organ is his skin. Its job is to protect the internal organs from the outside environment; to help maintain constant temperature, water, and mineral balance; and to... Read More


Skin Problems During the Summer

August 01, 2000

Skin problems in horses are some of the most frustrating disorders to manage for both owner and veterinarian. ... Read More


Hives in Horses: Symptoms and Treatment

September 01, 1998

Q: I noticed the other day that my Appaloosa gelding had hair standing up and welts on his skin. A friend suggested that he might have hives. What can you tell me about hives on horses. What kind of treatment should he have? ... Read More


Allergic Reactions in Horses

September 01, 1998

Allergic reactions are complicated and somewhat unpredictable events that are triggered by various environment... Read More