Cold sores, also known as fever blisters, are common skin infections caused by the herpes simplex virus. They typically appear as small, fluid-filled blisters around the lips or mouth. While many cold sores heal on their own, sometimes medical attention is necessary.

When to Seek Medical Help

Most cold sores resolve without treatment within 7 to 10 days. However, certain situations require seeing a doctor promptly to prevent complications or reduce discomfort.

If Cold Sores Are Severe or Persistent

If your cold sores are particularly painful, large, or do not heal after two weeks, consult a healthcare professional. Persistent sores might indicate an underlying issue that needs medical evaluation.

Signs of Secondary Infection

Seek medical attention if you notice signs of infection, such as increased redness, swelling, pus, or if the sore becomes more painful. These could indicate bacterial superinfection requiring antibiotics.

Frequent Recurrences

If you experience cold sores more than six times a year, a doctor can prescribe antiviral medications to help reduce the frequency and severity of outbreaks.

Other Reasons to See a Doctor

Visit a healthcare provider if:

  • You are unsure if the sore is caused by herpes or another condition.
  • You have a weakened immune system due to illness or medication.
  • The cold sore appears on your eye, nose, or genitals.
  • You experience difficulty swallowing or breathing.

Prompt medical care can prevent complications and help manage symptoms more effectively. Don't hesitate to consult a healthcare professional when in doubt.