I have one that started showing that. It was a big one too. I went back a couple weeks later and almost all the leaves had died and fell off. I figured it had some funk and might die. A couple others nearby to it and in the same kind of soil didn't look like that at all.
Well I went back and looked at it again today and it was pretty much done for. The buds are turning a bad color, haven't grown any more and its dropped more of its few remaining leaves.
Whatever it is, it looks exactly like mine did and now after 3 or 4 weeks, mine is just a shell of its former self and is going to its after life it appears.