Dear doctor, 13 year old girl hight 5.4 feet weight 70 kg. Normal menstrual cycle has facing some skin problems like her complexion getting dull day by day and she has vey black skin around the neck, armpits, inner thighs and on elbows. She is not taking any kind of medicines. I just want to know the reasons behind this black dull skin and can it be cured it self by the time and after loosing some weight. Pls guide in details. Thanks in advance.

Dr. Suruchi PuriDermatologist18yrs exp

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Get her insulin levels checked along with blood sugar test. If it?s normal then this may be due to hormonal changes that she may be experiencing.  

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Dr. Potnuru Srinivaasa SudhakarHomeopath31yrs exp

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A common cause of hyperpigmentation is an excess production of melanin. Melanin is a pigment that gives skin its color. ... Endocrine diseases, like Addison's disease, disrupt hormone levels and can increase melanin production. A lot of sun exposure can also cause an increase in melanin. The onset of symptoms most often is insidious and nonspecific. Hyperpigmentation of the skin and mucous membranes often precedes all other symptoms by months to years. It is caused by the stimulant effect of excess adrenocorticotrophic hormone (ACTH) on the melanocytes to produce melanin. Acanthosis nigricans (ah-kan-THO-sis NY-gruh-kans) is a skin condition. It causes thicker and darker patches or streaks around joints and body areas with many creases and folds (such as knuckles, armpits, elbows, knees, and the sides and back of the neck). ... Acanthosis nigricans is not an infection and isn't contagious. Black neck is a term used to describe a condition in which the skin on your neck is noticeably darker than the surrounding skin, also referred to as ?dark neck.? The change in color may be alarming and make you self-conscience, however, in most cases it isn't cause for concern nor is it contagious. 

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