The steroid cream could be relevant! Although topical steroids are considerably less likely than systemic steroids to cause adrenal suppression, they can still do so, particularly if you are on a potent steroid cream and having been using it for a long time.
Seems like this is worth bringing up with your doctor. I just hope he (or she) has a clue. Mention adrenal insufficiency rather than adrenal fatigue: the latter is a made-up term by alternative practitioners but isn't recognised by the medical community.
en.wikipedia.org/wiki/Adrenal_fatigueen.wikipedia.org/wiki/Adrenal_insufficiencyI should add that you probably don't have adrenal insufficiency, but given your long history of using a steroid cream it seems like it's worth checking out.