How to distinguish pityriasis rosea and psoriasis

summary

My wife recently grew some red rashes, and some erythema, there are scales, most of them are distributed in the limbs and trunk, checked on the Internet, some said that this is got psoriasis, but others said that it is pityriasis rosea, we do not know what kind of fight in the end. Now let's learn how to distinguish pityriasis rosea and psoriasis.

How to distinguish pityriasis rosea and psoriasis

First, the initial stage of psoriasis is red papules, which gradually expand and fuse into plaques with different shapes and sizes. There are silver white scales on the surface of the plaque. The scales are irregular in shape and easy to fall off. A layer of red shiny film can be seen after scraping the scales, and punctate bleeding can be seen after scraping the film. That is to say, white scales, film and punctate bleeding are the main symptoms of psoriasis. There is a strong itching or burning sensation. The rash usually appears on the scalp, trunk and limbs. Before the onset of the disease, there are acute tonsillar symptoms. The rash usually occurs in spring and winter, and it is easy to relapse.

Second: pityriasis rosea initially appeared a round pale red spot on the trunk, which was called "mother spot", and then expanded to the size of an egg. It was a pale red rose spot. There were fine chaff like scales in the center of the plaque, and a layer of free thin scales around the edge. The long axis of the oval erythema was arranged along the ribs and skin lines, that is, the rose red spots arranged along the skin lines were rose Pityriasis clinical characteristics, itching, rash appears in the trunk, limbs, neck and so on, generally does not occur in the face and legs, before the onset of cold, headache symptoms, generally in spring and autumn onset, not easy to relapse.

Third: psoriasis and pityriasis rosea have similarities in symptoms, which are easy to be confused in diagnosis. However, psoriasis has white scales, thin film and punctate hemorrhage, while pityriasis rosea rosea plaque is arranged along the direction of dermatoglyphics. Understanding the difference between the two is conducive to correct diagnosis and early treatment.

matters needing attention

Although pityriasis rosea and psoriasis symptoms seem to have many similarities, but careful observation can see that there are still differences between the two, patients can use their own symptoms to compare their specific symptoms to distinguish, can also go to the hospital to do a detailed examination.