What Can Cause Blisters on Lips?

Blisters on Lips

Blisters on the lips can be caused by various factors, and the most common cause is the herpes simplex virus (HSV). There are two types of HSV: HSV-1, which commonly causes oral herpes or cold sores, and HSV-2, which is typically associated with genital herpes. Cold sores on the lips are often caused by HSV-1.

Other potential causes of blisters on the lips include:

  • Sunburn: Prolonged exposure to the sun without proper protection can lead to sunburn on the lips, causing blisters.
  • Irritation or Trauma: Physical irritation, such as biting the lips, can cause blisters. Certain foods, chemicals, or even allergic reactions to lip products may also lead to irritation and blister formation.
  • Infections: Besides HSV, other viral, bacterial, or fungal infections can cause blisters on the lips.
  • Contact Dermatitis: Allergic reactions to substances like certain lip balms, lipsticks, or other skincare products can result in blistering.
  • Autoimmune Conditions: Conditions such as pemphigus or bullous pemphigoid, which are autoimmune blistering disorders, may cause blisters on the lips.

If you are experiencing persistent or severe blisters on your lips, it is advisable to consult a healthcare professional for an accurate diagnosis and appropriate treatment. They can help determine the underlying cause and recommend the most suitable course of action.

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