May 13, 2022 · Dark skin on the neck is a common condition that is characterized by a brown or black band of skin or irregular hyperpigmented patches. While a dark neck is usually not a cause for concern, it can also be a symptom of a serious underlying health condition.

Jun 2, 2022 · The main sign of acanthosis nigricans is dark, thick, velvety skin in body folds and creases. It often appears in the armpits, groin and back of the neck. It develops slowly. The affected skin might be itchy, have an odor and develop skin tags.

Mar 5, 2025 · A neck rash is an inflammatory reaction that can occur on the back, front, and sides of the neck. The way the rash looks and feels depends on what’s causing it. Many things can cause a neck rash to develop, such as allergies or skin conditions.

Mar 14, 2025 · Causes of rash on your neck may include allergies, eczema, infections, and heat rash. Home remedies and medications can help clear a rash.

Feb 11, 2021 · Light brown or black skin patches may be a sign of acanthosis nigricans. This treatable skin disorder isn't contagious or dangerous. However, it can be a sign of diabetes, so talk to your healthcare provider. Often, treating diabetes (or another underlying cause) causes the skin to clear up. What is acanthosis nigricans?

Feb 7, 2024 · Acanthosis nigricans is a fairly common skin pigmentation disorder. Dark patches of skin with a thick, velvety texture characterize the condition. The affected areas of your skin may also itch...

Mar 3, 2022 · Acanthosis nigricans is a skin condition characterised by a velvety papillomatous overgrowth of the epidermis. Darkening and thickening (hyperkeratosis) of the skin occurs mainly in the flexural areas, particularly the axillae, groins, inframammary regions, and the neck.

Acanthosis nigricans is the term for darkened, thickened patches of skin in the armpit and around the groin and neck. Find out about the main causes and treatments.

Jun 30, 2022 · Common causes of a rash on the back of the neck and on the front of it include contact dermatitis, eczema, and stress. In some cases, a skin rash can indicate a more serious condition, such as a severe allergic reaction.

What are the signs and symptoms of acanthosis nigricans? This skin condition causes some easily recognized signs and symptoms. You may notice that your skin with acanthosis nigricans: Darker skin in the folds of the neck is common. A velvety, dark patch of skin can form on most areas on the body, including the: