Psoriasis can develop on any part of the body but it commonly appears on the scalp, knees, elbows, and torso. The appearance of lesions is often symmetrical. That s why when a lesion appears on the right side of the body, the person affected should expect one to appear on the left also. Mostly psoriasis is diagnosed by an appearance of a rash on the skin. Along with rashes, if the person suffers from joint inflammation then he is prescribed a blood test. And in some rare cases, small samples of skin is taken and sent for observation.
More on what is psoriasis and what skin care regimen works best for psoriasis
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