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Crab Lice Symptoms & Diagnosis


Symptoms include:

  • Itchiness (can range from mild to severe)
  • Tiny blue-gray bumps stuck to the skin called macula caerulea
  • Skin breaks and possible bacterial infection (caused by scratching)


The doctor will ask about your symptoms and medical history, and perform a physical exam. He or she will examine your pubic area for lice, lice eggs (called nits), and macula caerulea .

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