Our expert says:
Pityriasis Rosea is an exanthem with unknown etiology. It is presumed to be a viral infection but can also be caused by certain drugs and even high stress levels. Peak incidence usually occur during Winter and Spring. Rash may last up to six months and bacterial super infection of rash is possible.
The diagnosis is usually confirmed by a Herald patch (solitary salmon coloured macule), followed by a pruritic rash, one to two weeks later. This rash may be confused with Tenia Corporis (ringworm).
This rash has the following characteristics: It is a bilateral symmetric macular rash, orientated along skin cleavage lines that gives it a christmas tree appearance. Maximal rash on trunk, abdomen and proximal upper extremities (arms, neck, face).
Pigmentation changes may occur in area of rash.
Pityriasis Rosea can co-exist with a current skin condition, i.e. eczema. Unfortunately, Pityriasis Rosea can take up to six months to resolve.
Dr Anrich Burger
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