Hi Selenium
I don't have any experience of having a child with a pws I am afraid but I wanted to reply to your post as I had a pws treated as a child and wanted to offer a bit of support or maybe even a few tips.
My stain was approx the size of a fift pence price and in a vey central location on my face so very noticeable. I am late thirties now and had my stain treated privately at the Lister hospital in London in 1986 or so as at the time I had treatment they were the only place in the uk who offered it (how my poor single mum afforded it is a mystery, bless her).
I had four or five treatments with the pulsed dye laser and had very good results. There was a very small area of slightly red skin remaining but this did not look particularly odd just a variation on normal if that makes sense. As I got older (pre treatment ) my stain became a lot darker and I do believe that if the treatment had been available earlier I would have complete clearance, so you are most definately right to go for treatment early.
My tips if they are of any use are:
If you can, go for complete clearance, as any remaining stain can darken and sometimes enlarge again as you age. This happened to me albeit to a small degree and I opted to have a few top up treatments in my late twenties. The benefit was not as good later on and also my skin did not cope with the treatment as well. Much better to get it out of the way as early as possible.
Young skin is amazingly resilient and can take more treatments in my opinion. i had no scarring whatsoever despite being quite prone to picking my scabs and even having a infection on one occasion due to this
. If you can I would suggest asking for some antibiotic ointment to apply post treatment as this will prevent this happening in any case.
I am sure the dermatologist will discuss this with you but I believe now that if you don't get really good results on one laser they can try others, this was what the doctor said to me at my last visit so it may be worth checking this out if things slow down with treatment. This might influence where you are referred.
I have always been seen by a consultant dermatologist, not sure if there are consultant paediatric dermatologists but I think the main thing I would ask is how much experience they have of treating pws stains and specifically in children. As with all things it's a mixture of art and science!
After the treatment ask them to apply cold compress to the area then lots of emollient once it's cool, this seems to reduce the swelling/ scabbing considerably. It's really really important to keep the skin moisturised and essential to reduce sun exposure to an absolute minimum for as long as possible after treatment so make sure if your little one goes to nursery etc they know to use factor fifty even in ordinary sun. I never needed any pain relief as there wasn't any but perhaps for young ones carpool might help if there is a bit of swelling etc.
As far as the treatment goes, I personally never found it that uncomfortable, very much like someone snapping an elastic band on the skin. If I had had a local anaesthetic it would have been that much more comfortable. If your little one has to have a larger area treated its probably worth getting sedation as it will make things that much less stressful.
Not sure how much help that is but I wish you all the luck, The results these days a fantastic so in a few years you will have forgotten al about his pws no doubt!!