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Equine Diseases
from A-Z

Learn all you need to about the most common and most unique horse diseases from around the world.

Not sure which disease your horse has, check out Happie Horse’s Symptom Checker to find out what your horse’s symptoms indicate.

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Equine Cushing's Disease (PPID) in horses is a hormonal disorder causing excessive hair growth, weight loss, and laminitis.
Metabolic and Endocrine

Equine Cushing’s Disease (PPID)

Equine Cushing’s Disease (PPID) Seek veterinary advice if you suspect this disease. Pituitary pars intermedia dysfunction (PPID), also known as

Laminitis in horses is a painful inflammatory condition of the hoof tissues, often leading to lameness and severe complications.
Hoof Diseases

Laminitis in Horses

Laminitis in Horses This disease is life-threatening and should be treated by a veterinarian swiftly. Laminitis is an inflammation of

Entrapment Colic Gas Colic Impaction Colic Sand Colic Spasmodic Colic Strangulation Colic
Diseases

Equine Colic

This disease is life-threatening and should be treated by a veterinarian swiftly.

Equine colic refers to abdominal pain in horses, it is a common and potentially life-threatening condition requiring prompt treatment.

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Potomac Horse Fever is a bacterial disease in horses causing fever, diarrhea, and laminitis, transmitted by ingesting infected insects or snails.
Diseases

Potomac Horse Fever

This disease is life-threatening and should be treated by a veterinarian swiftly.

Potomac Horse Fever is a bacterial disease in horses causing fever, diarrhea, and laminitis, transmitted by ingesting infected insects or snails.

Patent Ductus Arteriosus in horses is a congenital heart defect causing abnormal blood flow due to a fetal vessel failing to close.
Cardiovascular

Patent Ductus Arteriosus (PDA)

Patent Ductus Arteriosus (PDA) This disease is life-threatening and should be treated by a veterinarian swiftly. Patent Ductus Arteriosus (PDA)

A hoof abscess in horses is a localized accumulation of pus within the hoof capsule, often causing severe lameness and tenderness.
Hoof Diseases

Hoof Abcess in Horses

Hoof Abcess in Horses Seek veterinary advice before applying any treatment. A hoof abscess describes a painful build-up of purulent

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Mud fever, or pastern dermatitis, is a skin condition in horses marked by inflammation and scabbing on the lower limbs, often exacerbated by wet or muddy environments

Mud Fever (Pastern dermatitis)

Mud Fever (Pastern dermatitis) Seek veterinary advice before applying any treatment. Mud Fever is often caused by bacteria in wet environments. It is a non-contagious skin disease. When the skin softens due to long exposure to wetness, in combination with mud that rubs against and damages it, bacteria can enter. This most often occurs on the lower legs, horses with feathering are more prone to it since the feathering doesn’t dry well and hold on to mud more. Another cause

equine sinusitis horse chronic acute

Acute and Chronic Equine Sinusitis

Chronic and acute Equine Sinusitis Seek veterinary advice if you suspect this disease. Sinusitis refers to inflammation or infection of one or more of the paranasal sinuses, and it is the most commonly encountered disease of the paranasal sinuses. It is classified as either primary or secondary, and acute or chronic. Primary sinusitis is defined as an infection in the sinus, usually bacterial in origin, which results in a buildup of pus within the sinus. Primary sinusitis is typically the

Entrapment Colic Gas Colic Impaction Colic Sand Colic Spasmodic Colic Strangulation Colic

Equine Colic

This disease is life-threatening and should be treated by a veterinarian swiftly.

Equine colic refers to abdominal pain in horses, it is a common and potentially life-threatening condition requiring prompt treatment.