Hello and welcome to the Zero to Finals podcast. My name is Tom, and in this episode, I'm going to be

talking to you about peteriasis rosier, and you can find written notes on this topic at zero definals.com

peteriasis, or in the dermatology section of the zero definals pediatrics book.

So let's get straight into it.

Piterysis rosier is a generalized, self-limiting rash that has an unknown cause.

It typically occurs in adolescents and young adults.

It may be caused by a virus, for example the human herpes virus, however no definitive causative organism

has ever been established. Let's talk about the presentation. There may be prodromal symptoms

prior to the rash starting and these include headaches, tiredness, loss of appetite and flu-like symptoms.

The rash starts with a characteristic herald patch. This is a faint red or pink,

scaly, oval-shaped lesion that is two centimetres or more in diameter, usually occurring somewhere on the torso.

The herald patch appears two or more days prior to the rest of the rash. If you suspect peteriasis,

ask and look for a herald patch. Most but not all patients will have a herald patch. The rash consists of widespread,

faint red or pink, slightly scaly, oval-shaped lesions, usually less than two centimetres in diameter.

On the torso they can be arranged in a characteristic Christmas tree fashion following the lines of the ribs.

In darker skin patients, the lesions can be grey-coloured, lighter or darker than their normal skin colour.

Other symptoms may be present with a generalised itch, low-grade prexia, headache and lethargy.

Let's talk about the disease course.

The rash resolves without treatment within three months.

It can leave a discoloration of the skin where the lesions were,

however this will also resolve within another few months.

So what's the management?

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