Thank you for responding. He has been on mepolizumab since about July but just recently got approved for a larger dose after eosinophils started creeping up again. I'll look into a hematologist. Thanks!

My 10-yr-old has asthma but was diagnosed with HES last summer. I know this is an e-asthma sub, but I'm having a hard time finding people who have experience with HES. Our pulm admitted he knows little about treating it, but he's learning as we go. Just looking for support and commiseration, I guess? Thanks!

Hypereosinophilic Syndrome diagnosis?