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Persistent and mysterious fur loss

Yeti

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Hello,

I'm wondering if anyone has dealt with difficult to treat fur loss.

I have a 1 year, 8 month old Russian Dwarf Hamster named Fozzie Bear who's been losing fur for the past 4 months and has not responded to any treatments. Here's the history, as best as I can remember :

Four months ago (in June) I noticed a scent gland tumor on his stomach and he also had a little fur loss on his lower back area. He went to the vet and we made plans to remove the scent gland tumor & treat with antibiotics in the interim since it seemed to have a small infection from him scratching it. The vet did a skin scraping and did not see any signs of bacterial infection or mites, but we decided to treat for both anyway. He got a mite treatment and was given some antibiotics, which were also targeting the infected scent gland. I forget the name of the antibiotics.

He went back to the vet the following month (July) for his surgery and his fur loss had gotten worst. His lower body is mostly bald! Surgery goes well & he recovers well. I put him in totally clean bin cage after his surgery and did a deep clean & sterilization of his main cage. I didn't give him any sprays, flowers, herbs for a few weeks in case he had some kind of allergy. But nothing helped.

I bring him for a post-op checkup and the vet checks him for signs of ringworm, but sees no indication of that. We then did a skin and fur culture which was sent away to a veterinary lab but they did not find anything. We decided to trial some drugs and he was on chlorpalm for 2 weeks, but still no improvement.

The vet said we have 2 options for our next steps. We could try an anti-fungal just to see if that happens to work. The next diagnostic step would be a skin biopsy.

So that's the details about his health journey. If anyone has ideas of what could be going on please share.

Husbandry :
Feels relevant so Fozzie Bear is in a 36"x18"x18" aquarium with full cheeks paper bedding. He has a multi-chamber hide, other hideouts, tunnels, a 10" wheel, sandbath, etc. I know his cage is on the smaller side but I've never seen him engage in any stress behaviours like pacing or scratching the walls, so he does seem pretty cage content.

Family History :
So - I actually have some potentially relevant health details on his mother & some siblings. I adopted his mom when she was pregnant and then ended up keeping 4 of the pups since I couldn't find enough adopters.

Two of his siblings have also had masses. And his Mama & 1 of his brothers have also had fur loss issues within the past few months. However they have responded well to antibiotics and mite treatment and their fur has all grown back in.
 
Hello. I'm so sorry to hear Fozzie Bear has had all these issues. You sound like a great Hamster Mum and have done all this for him. And yes sometimes these things can be genetic unfortunately, especially with dwarf hamsters. My only other comment is at 1 year and 8 months, he is not that young and the fur loss could be age related - and possibly hormones as well if his scent gland has been affected. Apart from the fur loss, does he seem well and active?

For general fur loss, I think linseeds can do wonders - for fur condition and regrowth :-) It can take a couple of weeks before anything is noticed really. So a pinch of linseeds daily - maybe on a separate dish so he licks them all up - as opposed to mixed in with food where he might not get them all. It has worked for me before. It may help perhaps :-) One of our long standing experienced members Elusive, also recommends a small drop of evening primrose oil daily (maybe dropped on some food). I would start with the linseeds for 2 or 3 weeks and see how it goes, personally :)

But it may just be an ageing thing. It sounds like you've ruled out allergy. And you have non allergenic substrate. The only other thing is - if he has significant fur loss, he will feel the cold more, so you'd need to keep the room he's in a good temperature!
 
Sorry to hear about all the hammie unwellness - if it has not been tried, I would consider extra vitamins in their water? Sometimes hair loss is nutritional, if there is a genetic issue it may be a genetically underfunctioning enzyme which may sometimes respond to extra vitamins and minerals https://www.sciencedirect.com/science/article/pii/S0002916523061701
I wouldn't recommend vitamins in the water to be honest, as it can put them off drinking their water if they can taste it. Hemp seeds are supposed to provide all vitamins and minerals needed and are a natural way of giving vitamins - so a pinch of those as well as a pinch of linseeds might help. But the linseeds naturally provide things needed for skin and fur :-)
 
I've included some recent photos - there is significant fur loss on his lower body, but his skin doesn't look red or crusty. So this started about 4 months ago, but I haven't noticed any improvement or worsening for the past 2 months.


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20251014_131444.webp
 
Hello. I'm so sorry to hear Fozzie Bear has had all these issues. You sound like a great Hamster Mum and have done all this for him. And yes sometimes these things can be genetic unfortunately, especially with dwarf hamsters. My only other comment is at 1 year and 8 months, he is not that young and the fur loss could be age related - and possibly hormones as well if his scent gland has been affected. Apart from the fur loss, does he seem well and active?

For general fur loss, I think linseeds can do wonders - for fur condition and regrowth :-) It can take a couple of weeks before anything is noticed really. So a pinch of linseeds daily - maybe on a separate dish so he licks them all up - as opposed to mixed in with food where he might not get them all. It has worked for me before. It may help perhaps :-) One of our long standing experienced members Elusive, also recommends a small drop of evening primrose oil daily (maybe dropped on some food). I would start with the linseeds for 2 or 3 weeks and see how it goes, personally :)

But it may just be an ageing thing. It sounds like you've ruled out allergy. And you have non allergenic substrate. The only other thing is - if he has significant fur loss, he will feel the cold more, so you'd need to keep the room he's in a good temperature!
Thanks for the suggestion, he does love flax (just learned flax & linseed are the same thing) and I have it on hand so I can start offering that daily.
 
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It's odd isn't it - the top half looks quite thick fur. I had a robo who went like this. But he lived out his life happily :-)
 
It's odd isn't it - the top half looks quite thick fur. I had a robo who went like this. But he lived out his life happily :-)
Yeah - I do wonder if he's doing it to himself. I never see him scratching or biting when he's out & about, but he spends a lot of time in his burrow (always has).


Also - on the topic of vitamins - I have been giving omnivore critical care a few times a week. I think that's pretty nutritionally complete so maybe would help if there were a deficiency?
 
It probably would yes. I would definitely try the flax seeds/linseeds daily (the brown ones rather than golden) and give it 2 to 3 weeks. There is still a little bit of fur left right at his back end. Is he fine in himself? It could well be hormonal if he had a scent gland tumour removed though.
 
It probably would yes. I would definitely try the flax seeds/linseeds daily (the brown ones rather than golden) and give it 2 to 3 weeks. There is still a little bit of fur left right at his back end. Is he fine in himself? It could well be hormonal if he had a scent gland tumour removed though.

Yeah he's acting normally. He's always been a pretty reclusive little guy, spending lots of time in his burrow. He usually only surfaces about twice a day, for anywhere between 5 minutes to 1 hour, and spends the other 23 hours underground. He's always been like this, even when he was younger. I've always found it odd. But he comes out, putters around a bit, does a little bit of time on his wheel, business as usual.
 
That all sounds positive :-)
 
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