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Post-mite itching

HeatherW

Adult Guinea Pig
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My two floofy beauties are prone to catching mites. Usually, the six-week Ivermectin treatment (I've been using Xeno 450) is enough, but, after the last couple of times, they've still been scratching excessively.

The first time, the vet said it was because their skin was still inflamed and so they were prescribed 0.66ml each of Dog Loxicom (a brand of Metacam, I believe). For reference, Jasmine usually weighs between 1040g-1080g, and Pickle between 1370g-1460g. After the five-day course, they'd stopped scratching and their hair started to grow back. (I know it's bad when Pickle loses her hair, it's so thick).

However, this time round, I saw a different vet and was given a lower dose of Cat Loxicom instead (0.3ml and 0.4ml each). So I gave them another five-day course of this, but they were still scratching excessively and continuing to lose hair which meant a third trip back to the vet.

I've seen posts on here about Cat Loxicom now being licensed for guineas but not being strong enough, and so I raised these concerns with the vet who fortunately understood my situation. After checking them over, she said the mites have gone and the skin didn't appear to be inflamed anymore, but it was clear that they're both chewing their hair because of the way it's been shortened in places, indicating stress. The vet suggested a skin scrape to check whether it really is mites still causing these issues, but she was happy to prescribe Jasmine and Pickle 0.33ml and 0.46ml of Dog Loxicom each to see how they go. If needed, it's still possible to increase the dosage as well. They finished their five-day course on Friday.

It's a bit early to say whether or not this has solved the problem, but has anyone had any experience of skin scrapes and/or continued scratching after mites? If the latest course hasn't helped, what else could it be? I find it very difficult to watch my poor piggies keep scratching to the point where Pickle is giving herself scabs - although at least the Cat Loxicom has stopped it from being that bad now. :(
 
If this was my piggies, I would be going back to the vet and asking for them to take skin scrapes to test for mites, fungal and bacterial infections. Possibly if the piggies have scratched a lot they have introduced a secondary bacterial or fungal infection into the inflamed skin.
Skin scrapes are mildly uncomfortable but not a major procedure, the vet usually just scratches a microscope slide very hard across the affected area, it takes a few seconds, and a vet can often check under the microscope there and then for mange mites and also signs of bacterial infection, a fungal test is usually sent away to the lab to try grow any fungal spores.
Hope you get to the bottom of this, it sounds very frustrating for you and uncomfortable for the piggies x
 
I agree with @PigglePuggle !

But good that your vet has gone back to dog metacam. It is three times the strength of cat metacam and is both a painkiller and an anti-inflammatory, which should help to calm down the discomfort. Because of the quick metabolism of guinea pigs, give the metacam every 12 hours. What dosage are your piggies on?
 
@Wiebke, Jasmine and Pickle were on 0.33ml and 0.46ml of Dog Loxicom once a day. I wasn't told for how long I should give it to them, so stuck with 5-6 days.

@Abi_nurse, it looks like they only chewed their own and not each other's. Both times I've been to the vet about this, they've said the mites were gone, so it wasn't them that was causing the continued scratching. Unless, by more effective, you mean the injections provide anti-inflammatory relief as well? I've always been reluctant for them to have injections because I've heard it's more painful for guineas. Although I've also recently read (on Guinea Pig Guru on Facebook, I think) that the injections are okay if they're done on the back of their neck (I think).

It's been a week since they stopped receiving it now and I've seen an improvement. They're not scratching like they were, and I think Pickle's hair has started to grow back. It always takes a lot longer for Jasmine's to do the same! It's still a bit early to judge, but it sounds like the low dosage of Cat Loxicom may have been the issue...
 
Update: Pickle seems to be doing well and all her flood is returning. However, I noticed that Jasmine has a parting in her hair where she's been scratching at one spot near her haunches on her left side. It's not big, but she's clearly still in some discomfort, so I thought "Screw it", and have started her on a five-day course of 0.66ml of the remaining Dog Loxicom this evening.
 
Update: Pickle seems to be doing well and all her flood is returning. However, I noticed that Jasmine has a parting in her hair where she's been scratching at one spot near her haunches on her left side. It's not big, but she's clearly still in some discomfort, so I thought "Screw it", and have started her on a five-day course of 0.66ml of the remaining Dog Loxicom this evening.

You can give metacam (loxicom is a brand name for it) for as long as it takes; it is however not necessarily effective with mites.

I would recommend to check for potential secondary problems like fungal, bacteria or microbes getting into any open sores or for a fungal skin infection (not necessarily ringworm, which is only the most aggressive and contagious form of a whole host of other fungal skin infections).
 
Thanks! I'll see how the course goes and if it's not worked, I'll take them in for a skin scrape.
 
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