Doctor John

Because next time you'll think about it is about six to nine months down the track when you've tried everything else and think, oh, it could be scabies.

And don't just treat yourself, treat everyone who sleeps in the house.

And there's a full program you need to go for.

These little suckers, they're tiny little microscopic insects.

And when you've got scabies, you might only have three insects on your entire body.

Psoriasis is a fascinating thing.

We don't have a really good idea what's going on with it.

Now, basic maintenance is steroid going up and down in potency, some moisturizing cream, some vitamin D cream quite often will help as well.

There are some new things around for people who've got whole body psoriasis, which is really a horrible thing.

We want to make sure the diagnosis is right.

And there are some other skin conditions which can mimic psoriasis.

So if it's not following the pattern, we normally go get someone to do a little biopsy on it just to make sure.

I tell the kids they've got Harry Potter-itis.

I say, yeah, you've got a Harry Potter disease here.

What is it exactly?

It's a viral skin disease like a wart.

It's not a wart virus, but it behaves in exactly the same way.

Eventually your immune system finds it and wipes it out.

So we try and tell people to chill on it.

Not much he can do for that, is there?