Moles on the skin and lining of the mouth

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Yoshinori Abe

Medically Reviewed By:

Yoshinori Abe, MD

Internal medicine

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Content updated on May 23, 2022

When to See a Doctor

Seek professional care if you experience any of the following symptoms

  • Moles on the skin and lining of the mouth

Possible Causes

  • Nevus (sebaceous nevus, pigmented cell nevus, nevus of Ota, epidermal nevus)

    Also known as moles, these are clumps of pigmented (colored) cells. The condition is often present at birth, and is nearly always harmless.

  • Subungual bleeding

    This is a purplish discoloration of the nails as a result from bleeding under the nail. This is caused by direct trauma.

  • Pityriasis versicolor

    This is a common fungal infection that causes discolored patches, often on the chest, back, arms and neck. It is due to an overgrowth of a type of fungus that is found normally on skin. It most frequently affects young adults and teens, and in hot and humid climates.

  • Malassezia infection

  • Genital rashes
  • Lichen simplex chronicus

  • Purpura pigmentosa

  • Pityriasis rubra pilaris

  • Chloasma

  • Psoriasis (except for pustular psoriasis)

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Are there black, blue, or brown spots on the skin or elsewhere? (Including moles)

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Yoshinori Abe

Medically Reviewed By:

Yoshinori Abe, MD

Internal medicine

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