One of my Shar-pei's was very,very sick for a while.
It is a immune system problem similar to mediterrian fever in humans.
She had 107 fever, was not drinking or eating for a few days.
We had to give her pedialite by squirting it with turkey baster into her mouth.
Her rear leg hock was swollen to three times normal size, very painful, also swollen muzzle, vomiting the works.
Vet had her on IV for dehydration 2 days. Hubby was up all night with her putting crushd ice in her mouth.
She was also given tagiment and aspirin. Anti-biotics ng because there is no infection. Poor Baby
She is OK now, but this a a recurrent problem, gets worse with age.
I know it is only a metter of time.