Please choose the correct ending to complete the given sentence: Health: [header] How to recognize hives (rash ) [title] Detect itchy or stinging skin spots. [step] Hives may begin as an itchy or stinging area on your skin. If you begin to notice itching, stinging or pain on any parts of your skin with or without a specific cause, it may be hives and you could develop welts.

Ending1: Itching is likely a result of a hormonal disorder like eczema. This condition is triggered by your body's reaction to a new hormonal catalyst. Ending2: Hives also occur while you use products that have irritating chemicals in them such as exfoliating skin, which can cause scratching. You may also develop hives when you use products that cause oral/injection stings to the body surface. Ending3: [substeps] Keep an eye on any itchy or stinging spots for a few days and see if any hives develop. If nothing happens, you may have a bug bite or another condition that caused temporary itching. Ending4: [title] Determine if you feel or hear hives. [step] Hives may start as a rash or be an itch without any specific cause.

Answer format: ending1/ending2/ending3/ending4