Hair loss after Distemper-parvo Vaccine in cats

52 reports to the FDA describe hair loss in cats given Distemper-parvo Vaccine. That is 19% of all reports for this medicine, compared with 14% across reports for all cat medicines.

52Reports

62%Marked serious

35%Recovered

5.8%Died or euthanised

3 daysTypical onset

How soon it started

Same day

7 16%

1–2 days

14 33%

3–7 days

13 30%

1–4 weeks

7 16%

Over a month

2 4.7%

How the animals did

Recovered

18 35%

Still unwell when reported

8 15%

Died

2 3.8%

Euthanised

1 1.9%

Not known

23 44%

Problems reported at the same time

Application site reaction

29 56%

Skin redness

11 21%

10 19%

5 9.6%

3 5.8%

3 5.8%

Swelling

3 5.8%

Behaviour change

2 3.8%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: vaccine.

Mild, short-lived lethargy, soreness or a small lump at the injection site are the most commonly reported vaccine reactions.

Questions owners ask

Can Distemper-parvo Vaccine cause hair loss in cats?: 52 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?: In half of the reports with dates, it started within 3 days of the first dose.
What should I do?: Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Hair loss with similar medicines

Hair loss after Rabies Vaccine 272 reports · 11% of its reports
Hair loss after Feline Core Vaccine 105 reports · 6.8% of its reports
Hair loss after Feline Leukemia Vaccine 69 reports · 8.6% of its reports

All reported side effects of Distemper-parvo Vaccine in cats · Medicines most reported with hair loss