Pityriasis Rosea: Pink Patches on the Body — Is It Dangerous and How Long Does It Last

Pityriasis rosea is a rash of pink, scaly patches that appears suddenly on the body. It looks alarming but is not dangerous and usually clears on its own without a trace in 6–8 weeks. The main task is to tell it apart from similar conditions that do need treatment.

How does pityriasis rosea start?

1. The "herald patch" — first a single larger (2–5 cm) pink oval patch with fine scaling at the edge appears on the chest, belly or back.
2. Spread — 1–2 weeks later many small oval patches appear on the trunk, upper arms and thighs. On the back they often run at a slant, like the branches of a fir tree.
3. Itching — usually mild or absent; it can get worse after hot water and sweating.

Before the rash some people feel slightly unwell, with a headache or sore throat.

Why does it appear?

It is most common between 10 and 35 years of age, in autumn and spring. It is linked to the reactivation of certain viruses that lie dormant in the body. It is not very contagious: other family members rarely get it. It usually happens once and does not come back.

Why see a doctor?

Many rashes look similar, and they need treatment:

• fungal infection — told apart with a skin scraping;
• guttate psoriasis — more: psoriasis;
• nummular eczema and drug rashes;
• some infections — if the rash resembles them, the doctor may suggest a blood test.

A dermatologist makes the diagnosis with an examination and dermoscopy, and takes a scraping when needed.

How is it treated?

Pityriasis rosea clears on its own, so special treatment is often not needed. The doctor may advise:

• something to ease itching, if it itches;
• gentle moisturisers for dry skin;
• additional treatment for a long-lasting or widespread rash, at the doctor's discretion.

Steroid and antifungal creams used on your own do not help and change how the rash looks.

Care that speeds recovery

• Keep showers short and warm (not hot), and do not scrub with a washcloth.
• Wear loose cotton clothing.
• Avoid sweating and overheating — cut back on the gym and sauna for a while.
• Do not apply alcohol lotions, scrubs or fragranced products.
• Light or dark marks may remain after the rash — they fade over a few months.

In pregnancy

If a pregnant woman develops a rash like pityriasis rosea, she should see a doctor — both a dermatologist and her gynaecologist.

Dermatologist visits in Fergana and Kokand

At Radeski Skin Clinic a dermatologist examines the rash, tells pityriasis rosea apart from fungus, psoriasis and other conditions, and advises on skin care.

• Dermatologist in Fergana and in Kokand;
• similar complaints: itchy skin: causes.

Pityriasis rosea is a condition you can wait out — but only once the diagnosis is certain: show the rash to a dermatologist first.