My hamster is sick and not improving. What treatment is needed?

I am sorry to hear about Rex! I would be concerned about possible skin mites causing these changes, or a vasculitis of the ears. I would recommend bringing him in to a vet who sees pocket pets for an examination. They may try to do a skin scrape or treat him prophylactically for mites.

Thanks for reaching out about Cheese and including photos. The facial lesions appear infected, so even if caused by parasites, antibiotics are probably recommended. A veterinary visit is needed to prescribe the proper antibiotic and dose. Good luck.

Your hamster has a parasitic infection and you need to take him to a vet to get a treatment to kill the parasites. They may be mites, and I have used products for cats like Revolution to treat them in small mammals, but you'll likely have to get this from your veterinarian and dose it appropriately.

Thanks for reaching out about Polly. A first though would be skin mites causing her to itch a lot, creating wounds. A veterinary visit is recommended to assess and provide a diagnostic/treatment plan. If it turns out to be mites, all animals need to be treated and the environment cleaned thoroughly. Good luck.

Thanks for reaching out about Lune. Hair loss is probably due to scratching. The redness inside the ear could be due to infection, inflammation, mites or tumors in the ear. Unfortunately, a veterinary visit is needed for a diagnosis and then to prescribe a treatment. Care must be taken not to apply any topical medications as self grooming is common, and ingestion of medications can be critical. Try to look inside the ear to visualize any lesions. Good luck.

Your hamster may be suffering from ectoparasites such as mites or fleas and/or an allergy to the bites. I suggest you take him to a veterinarian for a hands-on exam and diagnosis. The vet can prescribe or treat your hamster with a proper medicine to kill the parasites. There are mite treatments for hamsters available in the pet shops, but I am not sure whether they are effective. You will definitely need to clean and disinfect your hamster's cage, bedding and toys and food and water containers to hopefully prevent the mites from reinfecting your hamster after treatment.

Yes, they are likely to be mites, even though to confirm this clinical suspicion at least a picture would be needed. I would strongly recommend to have an effective treatment on prescription given by your local veterinary clinic as a lot of over the counter treatments do not actually work.