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A severe sloughing of the surface of an organ or tissue, as a result of a toxic or inflammatory response at the site.

Inflammation of the cornea accompanied by corneal ulceration.

Uncommon condition affecting the lymphatic vessels; can be caused by either Corynebacterium pseudotuberculosis or Sporothrix schenckii, usually as the result of wound contamination. The lesions appear as nodules that develop most often on the hind legs below the hocks. The nodules eventually break down and ulcerate, releasing a thick greenish pus mixed wwith blood.

Noninvasive diagnostic technique for visualizing the internal structures of the body by means of sound (echo) reflections; ultrasound.

Ultrasonography.

High-energy radiation existing beyond the violet region of the electromagnetic spectrum; ultraviolet rays emitted by the sun are responsible for a number of effects on the skin, including tanning, burning, and activation of vitamin D.

Blood-vessel connection between the mare and the fetus.

Single-celled.

Occurring on only one side.

Poorly understood skin disease of Quarter Horses.

Any deviation in structure or function that interferes with a horse's intended use or performance.

Unkempt in appearance and failing to thrive.

Structure that during fetal life transports the foals urine into the placental fluids; it normally closes off after birth.

Nitrogen-containing compound generated by the breakdown of ingested proteins.

Abnormally elevated levels of urea and other nitrogenous waste products in the blood.

Membranous tube that transports urine from the kidney to the urinary bladder.

Urinary stone lodged in the ureter.

Membranous tube that transports urine from the urinary bladder to the exterior of the body.

The accumulation of smegma into a solidified mass in the urethra, resulting in inflammation and obstruction; also called bean.

Inflammation of the urethra.