Although darker patches of skin can have various causes, the seemingly harmless skin changes may indicate underlying health issues.
Dr Aamna Adel recently highlighted how the condition, known medically as acanthosis nigricans, can indicate health anomalies that require medical attention.
The UK dermatologist shared on TikTok: “Dark thickened skin like this under the arms, or on the back of the neck, is known as acanthosis nigricans.
“It can be seen with diabetes, PCOS, obesity, and sometimes cancer.”
The patches typically appear in skin folds, such as the armpits, neck or groin
DERMNETNZ
These dark patches typically appear in specific areas of the body, including the armpits, neck and groin, according to NHS guidance.
In most cases, according to the health body, obesity is found to be the underlying cause.
In rarer instances, however, these skin changes may be associated with stomach cancer or inherited through a faulty gene from a parent.
Other potential causes include hormone-related conditions such as underactive thyroid and Cushing’s syndrome.
Dr Adel outlined several treatment options for those affected by the condition.
“After addressing the underlying causes, using retinoids like differin, lactic acid-based creams like amlactin, and eurea-based creams can all help,” she explained.
However, identifying and treating the root cause of the condition remains the primary focus of treatment.
The NHS also emphasises the importance of having these skin changes checked by a GP, as they could signal an underlying condition.
Acanthosis nigricans causes patches of skin that are darker and thicker than usual
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According to the NHS, most patients with acanthosis nigricans notice patches of skin that are darker and thicker than usual.
“They can appear anywhere on the body,” states the NHS. “The patches are dry and feel similar to velvet.
“They’re most common in skin folds, such as the armpits, neck or groin.”
Early detection and diagnosis can lead to more effective management of any underlying health conditions.
