10d • Vet Cases⚕️
🐄 Case Study: Why Is Bella’s White Skin Falling Off?
Meet Bella, a Holstein dairy cow on an Oregon farm. Her owner calls in a panic after three days of bright summer sun. Bella’s white facial markings, teats, and udder are swollen and weeping. Her black patches look completely normal.
That sharp line where damaged white skin meets untouched black skin tells you everything.
This is photosensitization. But your next question matters enormously: is this primary or hepatogenous?
You check Bella’s eyes. Yellow sclera. You check her herd mates grazing a weedy, overgrazed pasture and notice ragwort scattered throughout. You pull blood.
GGT comes back at 480 U/L. Bilirubin at 9 mg/dL. Bella’s liver is failing.
This is hepatogenous photosensitization from pyrrolizidine alkaloid toxicity. Senecio has been quietly destroying her liver for weeks. The sunny weather just revealed it.
Bella goes indoors immediately. The prognosis is guarded.
💡 The takeaway: When white skin burns and the eyes are yellow, the problem is never just the skin.
Drop your questions below! No question is too basic. You are here to learn and I love hearing from you. 👇
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🐄 Case Study: Why Is Bella’s White Skin Falling Off?
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