Guinea pig bald spot not sure?

[KlM]

I just got her she’s 2 and I noticed this bald patch on her what could it be I have two other girls that used to have lice a year ago but now they are on ivermectin and lice free. So I would know if it’s lice but I haven’t seen any lice could it be mites? I’m not very familiar with it. I inserted photos

 

[Piggies&buns]

Best thing is to see a vet. It could be any number of things - parasites, barbering (which can be from over-grooming or pain in an area), ovarian cysts can cause hair loss on the sides (although this looks more like the leg area rather than side) etc

When you say ‘they are on ivermectin’, do you mean you are routinely giving it as a preventative? If so, then it is not recommended to do so. It should only be used to treat any current and active infestation. Using it as a preventative can lead to resistance and render it not useful in an active case

 

[KlM]

Best thing is to see a vet. It could be any number of things - parasites, barbering (which can be from over-grooming or pain in an area), ovarian cysts can cause hair loss on the sides (although this looks more like the leg area rather than side) etc

When you say ‘they are on ivermectin’, do you mean you are routinely giving it as a preventative? If so, then it is not recommended to do so. It should only be used to treat any current and active infestation. Using it as a preventative can lead to resistance and render it not useful in an active case

Oh I see I didn’t know that well if my Guinea pig with a bald spot I should give her ivermectin? I just got her so I doubt she’s on it

 

[Piggies&buns]

Oh I see I didn’t know that well if my Guinea pig with a bald spot I should give her ivermectin? I just got her so I doubt she’s on it

No piggy should ever just be ‘on it’.

No you should not give it to her. She needs to see a vet to find the cause of the bald area and have it treated appropriately following the correct diagnosis.
Never treat anything on spec

 

[Wiebke]

I just got her she’s 2 and I noticed this bald patch on her what could it be I have two other girls that used to have lice a year ago but now they are on ivermectin and lice free. So I would know if it’s lice but I haven’t seen any lice could it be mites? I’m not very familiar with it. I inserted photos

Hi

I would have her vet checked for potentially an ovarian cyst, especially if she also has got thinning hair on the other side of her belly and crusty nipples - but cysts can appear without causing visible symptoms or the full complement. Hormonal ovarian cysts that cause visible symptoms are generally small but growing cysts; the large non-hormonal fluid filled ones tend to become more common in older age.
Sows: Behaviour and female health problems (including ovarian cysts)

PS: What kind of ivermectin treatment are your piggies on and has your vet told you to keep them on long term ivermectin? Low dosed 'preventative' pet shop ivermectin will not really stop a major outbreak (it is too low dosed) but will contribute to resistancy. It is only advised with guinea pigs with a suppressed immune system or a story of repeated outbreaks/infestations and on recommendation by the treating vet.