My DD has these a few years ago. The doctor told me to leave it, however it was causing eczema which was quite sore, so he did prescribe hydrocortisone for that.
The spots were just not clearing up, just kept spreading over her torso, armpits and legs, and she was quite embarrassed about them when getting changed for PE etc.
Anyway we were due to go on holiday the following summer so I wanted to clear it up, so I experimentally did pop a couple of the largest ones. I was very clean, used wet-wipes to get the pus out, which were immediately thrown away, and then put sudocrem on the spots (they bled a lot) and once they had stopped bleeding put tea-tree oil oil on them. I kept putting sudocrem/tea-tree on until they had healed.
We also switched from baths to showers for a while (didn't want it to spread to her siblings) and washed towels/bedding/PJs regularly.
However I should say DD did not like me doing it! But she also really wanted the spots to go - she was worried about being on the beach in her swimming costume..
Anyway those two spots cleared up really well so a week later I did a couple more. And they cleared up too.
Because DD didn't like me doing it, we had a rule I would only ever do 2 spots at a time. She would read a book or watch tv and I got quite a good technique of popping them with my thumbnail (with a wet wipe on) so it was very quick. However I was able to reason with her, I think with a younger child this wouldn't work, and they would probably scream blue murder.
Anyway within a couple of months they had all gone and now she doesn't have any scars at all.
But as Tobago says her son did have scarring, so maybe it depends on your skin?
We did go on a sunny holiday that summer, and sunshine is really good for healing up skin, so I wonder if that helped?
So I found the popping worked, but it might not work for everyone, I wouldn't want to recommend it and then you find you have scarring.