Change diet and give a lot of vit. I have a sailfin with HLLE and it got all better but then he got ick and when i was treating him the HLLE came back so i am treating him agian and he is looking better.
Sarah
There are many threads on the BB that review this disease. Do a serach typing in HLLE, Head Lateral Line Erosion, etc. to see if you can get the answers you need.
If you need more help, post back.