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Hypovitaminosis A

Painted illustration of hypovitaminosis A in a parrot

What is it?

Vitamin A deficiency is very common in parrots fed mostly seeds. Vitamin A keeps the lining of the mouth, airways, and other tissues healthy; without it, infections take hold more easily.

What signs should I watch for?

Signs to watch for include sneezing, nasal discharge; white bumps in the mouth; poor feather quality; swelling around the eyes; and overgrown beak.

How is it diagnosed and treated?

Diagnosis is based on diet history and exam findings. Treatment involves correcting the diet, supplementation as directed by your vet, and treating secondary infections.

Can it be prevented, and what's the outlook?

  • A formulated diet with dark leafy greens and orange vegetables helps prevent this.
  • Diet changes should be gradual.

Reviewed by the Adler Veterinary Hospital veterinary team, October 2026.

Parrots fed mostly seeds

Who's at risk:

Sneezing, nasal discharge, white mouth bumps, swollen eyes

Main signs:

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Urgency:

When to call a vet right away

  • Sneezing or nasal discharge
  • Swelling around the eyes

Not sure whether it can wait? Call us anyway. Our team can help you decide.

Source:

Related conditions

Avian Bornavirus / Proventricular Dilatation Disease (PDD)

PDD (Bornavirus)

Feather-Destructive Behavior

Feather Plucking

Hepatic Lipidosis and Atherosclerosis

Fatty Liver & Atherosclerosis

Next steps

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