I think I can tick the (mild) Psoriasis box too Arthur. Had Eczema on a couple of occasions too, when younger... which my little boy appears to have inherited. Immune system overactive by the looks. Others have a lot worse wrong with them though, so I'll put up with it.

Last time I had a blood test (last year)... Doc observed that my white blood cell count was high, though I couldn't recall having being under the weather or ill in any way.

Nature's mysteries... eh.