Which of the following is a characteristic of purpura?

• A. Painless skin rash
• B. Generalized itchy skin
• C. Discoloration due to bleeding under the skin
• D. Dryness and scaling

Answer: (C)

Purpura is characterized by the discoloration of the skin that results from bleeding underneath the surface. This condition leads to the appearance of purple or red spots or patches on the skin, which are caused by the accumulation of blood outside of blood vessels due to various factors such as trauma, clotting disorders, or vascular inflammation. The hallmark feature of purpura is this discoloration, which does not blanch when pressed.

The other options describe different dermatological conditions or symptoms that are not indicative of purpura. For instance, a painless skin rash might suggest other dermatological issues, generalized itchy skin generally points to allergic reactions or other skin irritations, and dryness and scaling are typically associated with conditions like eczema or psoriasis. Therefore, the defining characteristic of purpura remains its specific discoloration due to subcutaneous bleeding.