Christmas Tree Pattern Dermatology

A christmas tree rash.

Christmas tree pattern dermatology. The clinical presentation of skin diseases following a christmas tree pattern is limited to a small number of primary skin diseases discussed in more detail in subsequent sections that essentially are pityriasis rosea and mycosis fungoides as well as the maculopapular stage 2 of syphilis exanthematic sarcoma idiopathicum multiplex hemorrhagicum kaposi the early exanthematous stages of psoriasis vulgaris and the exanthematic paraneoplastic occurrence of multiple seborrhoic keratoses. The lesions on the trunk and abdomen often run along the midline of the body in a pattern that looks like the outline of a christmas tree hence the name. Pityriasis rosea may be very itchy but in most cases it doesn t itch at all.

In some cases it. This rash herald patch may spread as small patches to other parts of the back chest and neck. The clinical presentation of skin diseases following a christmas tree pattern is limited to a small number of primary skin diseases discussed in more detail in subsequent sections that essentially are pityriasis rosea and mycosis fungoides as well as the maculopapular stage 2 of syphilis exanthematic sarcoma idiopathicum multiplex hemorrhagicum kaposi the early exanthematous stages of psoriasis vulgaris and the exanthematic paraneoplastic occurrence of multiple seborrhoic keratoses.

10 to 35 years old. Langer lines show the direction of the lowest naturally occurring skin tension and its thoracodorsal manifestation is the christmas tree pattern. A week or two after the herald patch appears it is joined by daughter patches smaller scaly rashes that form on your chest or back often in the shape of a christmas tree.

Here we review clinical aspects of pityriasis rosea mycosis fungoides stage 2 syphilis exanthematic kaposi sarcoma exanthematic psoriasis leser trelat syndrome and other primary skin diseases with a christmas tree pattern. The rash may form a pattern on the back that resembles a christmas tree. Thus the baldaquin sign never caught on whereas the christmas tree eponym is now universally acknowledged.

Less than three months. Christmas tree rash pityriasis rosea is a fine itchy scaly rash that usually appears first as a single patch on the chest abdomen or back. Single red and slightly scaly area followed.

The rash has been described as looking like a fir tree. By the 1990s the christmas tree eponym sometimes called fir tree pattern becomes regularly mentioned in descriptions of the clinical features of pityriasias rosea. Skin patches don t usually appear on the soles of the feet face palms or scalp.