Please choose the correct ending to complete the given sentence: Health: [header] How to diagnose psoriasis [title] Look for red patches of skin that appear scaly. [step] You should look for any red patches of skin on your body, including your genitals and the inside of your mouth. The red patches may look like they are covered with silvery scales and may only appear in a few spots on your body or in large areas on your body.

Ending1: [substeps] Avoid scratching or touching your red patches, as this can cause them to spread and later become mildew. [title] Examine your skin for scaly skin. Ending2: If you notice these symptoms, you may have a type of psoriasis called plaque psoriasis. This is the most common form of psoriasis. Ending3: [title] Use warm water and soap to clean the area. [step] Place a warm washcloth or cloth in warm water and soap the area of the patch. Ending4: They may often appear as a small red bump up front or as a dark red on the outer layer of your body. [substeps] The red patches may shrink and become weak or flag up over time.

Answer format: ending1/ending2/ending3/ending4