Can gilbert syndrome return after 6 months ? i had gilbert syndrome last year in august and now i doubt i am having it again

Yes, lifetime: Gilbert's Syndrome is caused by an abnormal gene that you inherit from your parents. The gene controls an enzyme that helps break down bilirubin in your liver. G.S is a mild nonhemolytic unconjugated hyperbilirubinemia defined by bilirubin levels less than 6. Inherited disorder with decreased levels of the enzyme uridine diphosphoglucoronate glucuronosyltransferase (UDPGT) Common, mild jaundice.

It's yours: Gilbert's syndrome isn't going anywhere. You'll likely have elevated bilirubin for the rest of your life. I don't think it ever left. Hope this helps!