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If you have any concerns with your skin or its treatment, see a dermatologist for advice. Other treatment options depend on the cause and may include:If your melanonychia is malignant or cancerous, then the tumor or cancerous area must be completely removed. 2007 Sep. 46(9):920-2. . Research has found that performing a biopsy on most melanonychia is the best way to get an earlier diagnosis.© 2005-2020 Healthline Media a Red Ventures Company. These deposits are usually grouped together. Melanonychia striata typically involve multiple nails. Note that this may not provide an exact translation in all languagesAuthor: Ken Hiu-Kan Ip, Medical Student, University of Auckland, New Zealand; Chief Editor: Dr Amanda Oakley, Dermatologist, Hamilton, New Zealand; Copy Editor: Clare Morrison, June 2014. Types of melanonychia. This can represent a Melanocytic activation is an increase in the production and deposition of melanin into the nail cells (Where melanonychia is attributed to a benign cause, no further treatment is necessary.Sponsored content: melanomas are notoriously difficult to discover and diagnose.DermNet NZ does not provide an online consultation service. However, it usually does not go away by itself.The outlook for malignant melanonychia is not as good. All rights reserved.

2008 Nov. 59(5):785-91. . If your melanonychia is from a benign cause and is noncancerous, then many times, there is no treatment needed. Melanin is deposited into the growing nail when melanocytes are activated, resulting in a pigmented band — this is longitudinal melanonychia.. There are two broad types of melanonychia: Melanocytic activation.

Nail matrix biopsy is warranted in whites, when the melanonychia striata are solitary, are greater than 6 mm with variegated pigmentation, or show proximal widening suggestive of melanoma. Melanonychia striata in Chinese children and adults. Melanonychia — codes and concepts These melanin deposits are caused by two primary processes.

Our website services, content, and products are for informational purposes only. Examples include tar deposits from chain-smoking, hair dyes, henna, ink, potassium permanganate (a topical disinfectant), and silver nitrate used to heal burns and wounds. Melanonychia is brown or black discoloration of a finger or toe nail. In some cases, the finger or toe that has the tumor may have to be amputated.A diagnosis of melanonychia is reached after a series of diagnostic exams and tests.

Melanocytes typically lie dormant in the proximal nail matrix where the nail originates.

Your doctor will begin with a physical exam of all your fingernails and toenails. Benign melanocytic hyperplasia (lentigo or nevus) was the cause of 77.5% of cases of longitudinal melanonychia in our overall pediatric population and of 85% of cases in the subset of white patients. J Am Acad Dermatol. The decolorization is usually in a stripe that starts at the bottom of your nail bed and continues to the top. Your doctor will also look at your medical history to see if you have any medical conditions that may be causing the melanonychia.The next step in diagnosis is a dermatoscopic examination using a specific type of microscope to get a close look at the discolored areas. These lines can be a natural occurrence if you have a dark complexion. Int J Dermatol. These processes have different causes.Other causes of melanonychia beyond the two primary types may include:The treatment for melanonychia varies depending on the cause. All the remaining cases of longitudinal melanonychia were the result of melanocytic activation. Melanonychia is caused when the pigment cells, called melanocytes, deposit melanin into the nail.

The signs of possible nail melanoma are:Besides looking for signs of a possible melanoma, your doctor will combine findings from both the dermoscopy and the physical exam to determine the type and cause of your melanonychia. If your melanonychia is caused by medication, your doctor may change your medication or have you stop taking it for a time, if that is possible. This physical exam includes looking at whether your nail is deformed in any way, how many nails have melanonychia, as well as the color, shape, and size of your melanonychia. After these two steps, your doctor may also perform aPossible complications of melanonychia include nail cancer, bleeding under the nail, splitting of your nail, and deformity of your nail. As your nail grows, it causes the stripe of brown or black to appear on your nail. Mohs micrographic surgery has been proposed in melanoma presenting as longitudinal melanonychia. Melanonychia may also be called melanonychia striata or longitudinal melanonychia.The nails of your toes or fingers are usually translucent and not pigmented. Cancer of the nail is challenging to catch in the early stages because of its similarities to the benign causes of melanonychia. DermNet provides Google Translate, a free machine translation service. The nail biopsy can also cause nail deformity because it removes a portion of the nail.The outlook for most benign melanonychia is good, and in most cases, does not require treatment.

DermNet NZ does not provide an online consultation service. Melanonychia may also be called melanonychia striata or longitudinal melanonychia. Your doctor will look primarily for signs that your melanonychia may be malignant. The nail plate is a hard, translucent structure made of keratin.It is not normally pigmented. View chapter Purchase book. Read full chapter. Melanonychia commonly presents as pigmented band arranged lengthwise along the nail unit, and this presentation is known as longitudinal melanonychia or melanonychia striata and is due to melanin within the nail plate. What causes melanonychia?

Melanonychia is a condition of either the fingernails or the toenails.

It is more Melanocytic hyperplasia refers to an increased number of melanocytes within the nail matrix. Leung AK, Robson WL, Liu EK, et al. This condition requires the removal of the tumor which may also include amputation of your finger or toe.