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Diseases & Conditions

Melanocytic Nevus

Melanocytic NevusCausesMedicationsPreventionRisk FactorsSymptomsTreatmentTypes

What is Melanocytic Nevus?

Melanocytic Nevus is a kind of skin lesion that manifests during the first 20 years of a person’s life. It has its genesis in the melanocytes which are skin pigment producing cells that layer the epidermis. Although it is not a life threatening or contagious disease, its treatment after diagnosis is highly recommended.

Causes of Moles

Genes have been found to influence the presence of moles on a person’s body.

Moles manifest when epidermal cells grow in a bunch or cluster rather than spread out over the skin. These cells are responsible for skin pigmentation. Melanocytic Nevi darken after being exposed to the sun, during pregnancy or during teenage years.

With the passage of time, moles change slowly; they may become elevated or change color. Very often, hairs develop on them.

Medication for Melanocytic Nevi

There are a number of over the counter medications available that can be obtained without any physician’s prescription, the rates of which range from 10$ to 70$. They work by burning the skin layers of the mole and slowly exposing new skin tissue underneath the mole. Examples of such medications include Derma Trend and Nevi Curative which contain potent and natural ingredients which can eradicate moles.

Prevention Of Melanocytic Nevus

  • A dermatologist should be consulted in case any new mole appears or an already existing one shows rapid evolution.
  • It’s wise to have an annual examination by a skin specialist, especially for those with higher risk factors.
  • Avoid overexposure to the sun, always use a good quality water resistant sunscreen lotion which has 30 SPF or more. Apply generously on all exposed skin and wear adequate protective clothing while going out.
  • Self examination to notice abnormal growth, changes or bleeding on Melanocytic Nevi.

Risk Factors of Moles

  • Having more than 100 moles increases the likelihood of developing melanoma
  • Heredity: If you have a sibling or parent with moles, you are likely to develop them too
  • Weakened immune system as a result of certain medications or organ transplants may lead to Melanocytic Nevi.
  • Overexposure to the sun’s UV rays, particularly during adolescent years, leads to the development of Melanocytic Nevi.
  • Xeroderma Pigmentosum, which is a rare hereditary illness caused by some defect in the enzyme that usually repairs UV ray damaged DNA, may lead to melanoma.
  • Severe blistering sunbeams
  • Fair skin and freckles.

Symptoms of Moles

Common moles are raised or flat moles and skin tags. Benign moles are oval or circular, but not very large. Melanocytic nevi may sometimes indicate the warning signs of melanoma, a serious form of skin cancer. The ABCDE’s of the symptoms include:

  • Asymmetry, when one side of the growth is different from the other side.
  • Border irregular, when mole growth has uneven, scalloped edges.
  • Color variance, when the mole displays more than one shade. Moles may be brown, tan, black, speckled white, blue or red.
  • Diameter, when the size is more than that of a pencil eraser.
  • Evolution, when the mole shows sudden signs of growth and changes in color, shape, and elevation. The Melanocytic Nevus becomes painful, scaly or crusty. This may be accompanied by burning or itching, bleeding or oozing.

Treatment for a Mole

A dermatologist may remove a mole if it becomes a nuisance, a person finds a mole unattractive or in case skin cancer is suspected. If a dermatologist wants to evaluate the mole further or entirely remove it, he will take a small tissue sample so that thin tissue sections can be examined under a microscope. A frequently used method to remove a mole is by performing a surgical excision which means that the entire mole is cut out entirely along with a surrounding patch of normal skin and the wound is closed by stitching the skin together. Another method used is to shave the entire mole using a surgical blade. It is best advised never to try to shave off the mole at home as it may lead to infection and disfigurement.

Types of Melanocytic Nevus

Melanocytic nevi include a family of lesion, the common variants include:

  • Compound Nevus
  • Junctional Nevus
  • Intradermal Nevus
  • Blue Nevus
  • Dysplastic Nevus
  • Spitz Nevus
  • Acquired Nevus
  • Congenital Nevus
  • Intra mucosal Nevus
  • Giant Pigmented Nevus
  • Nevus of Ota and Nevus of Ita
  • Recurrent Nevus
  • Mongolian Spot