General I'm not quite sure what's happening

[Jadetheloner]

My cavy Midnight, he's losing hair, i'm not sure if its normal shedding or if its mites. I recently cleaned his cage and such. I also feel like he's not gaining weight like he should be. On the off chance he doesn't get his pellets, or vitamin C tablet (not very often), he has hay no matter what. My sister is in school to be a vet, but she doesn't exactly like me. So i don't want to go directly to her if i dont have to. I know i should but i dont want her to yell at me.

 

[Guinepigmom_2.0]

@Jadetheloner here is a useful website with information about hair loss :
https://www.guinealynx.info/hairloss.html

Also if you have pictures to share of the guinea pig with where he is losing hair that way it might be easier for us to understand better

 

[XpancakeX]

it also kinda depends on how much hair. one of my piggies shed less then my other one. do they shed when you pet them? do they scratch a lot more often? i'm not a guinea pig expert but if hes scratching a lot he might have mites. but this is my theory soooo don't take it too seriously..
edit: but i hope it helps!

 

[bpatters]

Are you just seeing loose hair all over the cage, or are there places on the guinea pig where the hair is definitely thin? Because guinea pigs normally shed a lot of hair.