Arithmomania - Not often mentioned here - Am I the only one diagnosed with it?

I have a diagnosis of ASC, OCD and Arithmomania. 

I've discussed ASC at some length on the threads here, but Arithmomania has only come up a few times - and quite some time ago.

Am I the only one here who compulsively counts? When I'm stressed I need to count the number of letters in words, especially the longer ones. I count them forwards and then backwards.  It's a damned nuisance but just has to be done.... over and over again.  When stressed, I will repeatedly count up to a hundred and back again to zero. I never do actual arithmetic, just counting.

Am I alone?

Ben