Is this chicken pox?

[babymum15xx]

Would you say this is chicken pox? Dermatology has confirmed it is by looking at it however the spots are only on arms and no high temp/illness. I'm not totally convinced. Currently has these spots for 2 weeks (we thought it was eczema). Thanks.

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I don't see a picture but CP usually presents on the torso and not just the arms and doesn't last 2 weeks. Have they formed blisters?

@dementedpixie thanks for your reply I tried for ages last night to attach picture but it isn't working lol
I know this is why I'm questions it. Yes they formed blisters then little scabs now. He's scratching like mad. He seems totally fine though!