ds1 (3.8) had it with spots all over his body before he was one
ds2 (2.6) had ONE suspicious looking spot 10 days ago on his back...flat red, then weepy, then crusty and nothing else.
ds3 (7 mos) had/has ONE suspicious looking spot two days ago which hasn't yet changed although he is off his food, not himself, slight temperature, clingy etc.
Is it possible to have chickenpox so mild that you get just the ONE spot? Chickenpox has been going round ds1/2 nursery.