Is this psoriasis?

Hi all I've been reading through the forums here with interest, but am still not sure if I actually have psoriasis. I've just had an outbreak of spots on my arms that started as little red spots (I thought it was hand, foot and mouth caught from my toddler). These then spread out into dry, red 1cm patches on my arms, shoulders and spine. I have the odd spot elsewhere, on my stomach and legs. The GP is treating for psoriasis with a steroid cream and emollient but I'm still not sure. The spots haven't been itchy, and I'm 36 which would be an odd time to develop it. It doesn't look much like the pictures I"ve seen online (the spots ended up a bit dry but not really scaly). I'm otherwise very healthy and there's no family history. On the other hand the spots are only just healing up after one month, I had a bad cut on my hand recently and I have been under some stress with work, sick children etc. So my question is, does this sound like psoriasis to the people who have actually had it?Or could it be something else, like an allergy? Would love any advice. Emma