What could be the reason for brown patch on my back?

Question

Hello doctor,

I am a 26-year-old male. I have black or brown patches on my back below the neck. The whole of my upper back portion has turned black/brown. It has been around 10 years this discoloration started, but is now constant (not spreading) for the past four to five years.

Please help.

Thankyou.

Answer 1

Hi,

Welcome to icliniq.com.

It is pigmented hairy epidermal nevus (Becker nevus or Beckers melanosis). The first appearance of this nevus is in adolescence. It presents as an irregular, hyperpigmented patch. Once present these nevi stabilize after several months or years. Becker nevus is a benign condition and malignant transformation is rare. No treatment is required, although lasers have been used for cosmetic benefits. Its cause is familial and occurs due to mutation. Genetic counseling should be tried.

I hope this helps.

Kindly follow up if you have more concerns.

Thank you.

Answer 2

Hello,

Welcome back to icliniq.com.

As it is melanosis, you can try demelanizing agents like Azelaic acid, Kojic cream. Use Aziderm 20 percent cream at night for 20 days, or Kojic cream at night for 20 days, or Nexglow cream at night for 20 days. Take tablet Limcee 500 mg once a day for 30 days.

I hope this helps.

Kindly follow up if you have more concerns.

Thank you.