To prepare for your appointment, see the topic Making the Most of Your Appointment

You can help your doctor diagnose and treat your condition by being prepared to answer the following questions:

• What is the history of your rash, including:
  • When did the rash start?
  • Where did the rash start?
  • Has the rash spread?
  • Has the rash changed?
  • Have you been in contact with anything that may have caused the rash?
  • Have you been around anyone recently who has a similar rash?
• Have you had this rash before? If yes:
  • What were the circumstances?
  • When did you last have it?
  • How was it treated?
  • How long did it last?
• What other symptoms have you had? Symptoms may include itching, burning, stinging, tingling, numbness, pain, or tenderness to the touch.
• Have you used a new food, medicine, or product, such as cosmetics, cleaning agents, detergents, soaps, chemicals, fabrics, lotions, or nonprescription medicines?
• Have you been exposed to poisonous plants. such as poison ivy, oak, or sumac?
• Have you had any other health problems during the past 3 months?
• Have you recently traveled to a rural area or to another country?
• Have you been under an unusual amount of stress at home, work, or both?
• Does anyone in your family have a skin disorder or an allergy? If so, to what?
• What home treatment measures have you used? Has anything made the rash better or worse? Be sure to include any nonprescription medicines you have taken.
• Do you have any health risks?