Many times, stains on armpits and on the neck are due to a skin condition known as acanthosis nigricans. We will go into more detail on this condition below, and also mention the treatments that are effective against it.
What is acanthosis nigricans?
According to the organization Kids Health, the acanthosis nigricans is a skin condition that causes thick dark spots or streaks in the joints and areas of the skin that have many folds, like these:
However, there are people who have acanthosis nigricans on the palms of the hands, groin and lips. In rare cases, this condition can occur in areas of the body that do not have folds, such as face, arms, back and legs.
Is it is not an infectious or contagious condition, and it does not cause any harm, except for a possible mild itching that occurs mainly in children. However, the doctor will do medical tests in order to rule out abnormalities that require particular treatment.
There is no established treatment for acanthosis nigricansHowever, most cases do not require treatment as dark skin clears on its own.
If the acanthosis nigricans is caused by another condition, the respective treatment for that condition should be sufficient to also eradicate the spots and stripes on the skin, or lighten them a bit.
It is possible that the acanthosis nigricans is caused by intake of a specific group of medications. In these cases, it is best to discontinue use of these drugs and replace them with others if possible.
As you can see, the spots on the armpits and skin caused by acanthosis nigricans can go away on their own, and since they are not related to any pain or discomfort, it can be said that they are not a serious problem of Health.