Tinea Nigra

Definition

Tinea nigra is an infection of the skin. It affects the outermost layer of skin. The infection will cause a black or brown patch on the skin. Except for the dark patch, tinea nigra is a harmless condition.Tinea nigra usually affect the palms of the hands or soles of the feet. It may also appear on the neck or trunk.
Cross-Section of Skin
skin layers cross section
Tinea nigra affects the topmost layer of skin.
Copyright © Nucleus Medical Media, Inc.

Causes

Tinea nigra is caused by a fungus. The type of fungus that causes this infection is most often found in rotting wood, soil, compost, or sewage. The fungus may enter your body through a break in your skin.

Risk Factors

You are more likely to develop tinea nigra if you have been living or traveling in tropical or subtropical areas, such as:
  • South Africa
  • Brazil
  • Panama
  • Cuba
  • Puerto Rico
  • Coastal areas along the southeastern United States

Symptoms

Tinea nigra causes a brownish-black patch on the skin that:
  • Has an irregular shape with a darker border
  • May be itchy or scaly
  • Tends to expand over time
A tinea nigra patch may be mistaken for a type of skin cancer. Talk to your doctor about any skin growth or changes.

Diagnosis

Your doctor will ask about your symptoms and medical history. A physical exam will be done. You may need to see a skin specialist for tests, diagnosis, and treatment.Tinea nigra is diagnosed by scraping a small sample of the affected skin. The sample is examined under a microscope.

Treatment

Tinea nigra is usually treated with an antifungal medication. The medication is placed on the skin as creams or ointments.

leave comments
0
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals



July 2015

A randomized trial found that fecal microbiota transplantation had a higher rate of remission in patients with active ulcerative colitis than those who recieved placebo. Fecal transplantation is believed to help the intestine develop a healthy balance of bacteria in the gut which can help the intestine recover and function more effectively.

dot separator
previous editions


June 2015


May 2015

Chewing Gum After Surgery May Improve Digestive Tract Recovery
April 2015

dashed separator

Advertisement

Our Free Newsletter
click here to see all of our uplifting newsletters »

 

Advertisement

Advertisement

DiggDeliciousNewsvineRedditStumbleTechnoratiFacebook