Why does my hamster have a black crusty growth on his side?
Updated On September 23rd, 2025
Pet's info: Other | Unknown - Other | Male | unneutered
My Syrian hamster has a black crusty growth on his side (perhaps his hip). He appears to not be in pain. He likes being held and moves about fine. And doesn't wince or try and bite me when held. He happily runs in his ball and has not lost his appetite. He is 18 months old.
2 Answers
Most Helpful Answer
Published on June 1st, 2017
It is difficult to suggest what this might be without a visual. However, crusty scabs can either be due to infection (bacterial, fungal or viral) or due to a parasitic infection (mites, fleas etc). Benign sebaceous cysts can also sometime form crusty scabs as can malignant masses. Your veterinarian will be able to perform testing (skin scrape and cytology or fine needle aspirate) to determine what the scab is and prescribe appropriate treatment.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on December 8th, 2017
If he was housed with other hamsters, they may be old injuries that are healing. Monitor them for resolution. If they don't resolve or if they spread or cause discomfort then have him examined by your veterinarian.
2Pet Parents found this answer helpful
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