• lesion
  • nevus of Ito a mongolian spot-like lesion having the same features as nevus of Ota except for localization to the areas of distribution of the posterior supraclavicular and lateral cutaneous brachial nerves, involving the shoulder, side of the neck, supraclavicular areas, and upper arm. (thefreedictionary.com)
  • Nevus (or nevi if multiple) is a nonspecific medical term for a visible, circumscribed, chronic lesion of the skin or mucosa . (wikipedia.org)
  • Nevus spilus (speckled lentiginous nevus): This lesion includes dark speckles within a tan-brown background. (wikipedia.org)
  • Disorders
  • Prevalence is unknown, but Epidermal nevus syndrome is listed with the National Organization for Rare Disorders, which defines rare as affecting "fewer than 200,000 people in the United States. (wikipedia.org)
  • The term nevus is applied to a number of conditions caused by neoplasias and hyperplasias of melanocytes , as well as a number of pigmentation disorders, both hypermelanotic (containing increased melanin , the pigment responsible for skin color) and hypomelanotic (containing decreased melanin). (wikipedia.org)
  • Additional types of nevi do not involve disorders of pigmentation or melanocytes. (wikipedia.org)
  • mole
  • Common terms, including mole , birthmark , and beauty mark , are used to describe nevi, but these terms do not distinguish specific types of nevi from one another. (wikipedia.org)
  • excess
  • These nevi represent excess growth of specific cells types found in the skin, including those that make up oil and sweat glands. (wikipedia.org)
  • additional
  • Theoretically, mutations occurring very early in embryonic development give rise to more extensive epidermal nevi and may potentially affect additional organ systems [ 5 ]. (uptodate.com)
  • It has been reported that up to 10% of individuals with epidermal nevi may develop additional syndrome symptoms, but that number appears to be inconsistent with the rarity of the syndrome and may be overstated. (wikipedia.org)
  • extensive
  • The earlier in embryological development such a mutation occurs, the more extensive the nevi are likely to be and the greater the likelihood of other organ system involvement. (wikipedia.org)
  • blue
  • blue rubber bleb nevus a hereditary condition marked by multiple bluish cutaneous hemangiomas with soft raised centers, frequently associated with hemangiomas of the gastrointestinal tract. (thefreedictionary.com)
  • oral
  • Facial nevi may extend to the oral mucosa and cause friable, papillomatous, bleeding masses. (mhmedical.com)