Acne - Symptoms and causes - Mayo Clinic
网页2024年7月20日 · Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads, blackheads or pimples. Acne is most common among teenagers, though it affects people of all ages. Effective acne treatments are available, but acne can be persistent.
Skin cancer - Symptoms and causes - Mayo Clinic
网页2022年12月6日 · Having skin lesions known as actinic keratoses can increase your risk of developing skin cancer. These precancerous skin growths typically appear as rough, scaly patches that range in color from brown to dark pink.
Actinic keratosis - Symptoms & causes - Mayo Clinic
网页2022年12月17日 · An actinic keratosis (ak-TIN-ik ker-uh-TOE-sis) is a rough, scaly patch on the skin that develops from years of sun exposure. It's often found on the face, lips, ears, forearms, scalp, neck or back of the hands.
Acne - Diagnosis and treatment - Mayo Clinic
网页2024年7月20日 · Learn more about this common skin condition, including causes, treatments and simple skin care steps you can do at home to help control it.
Skin cancer - Diagnosis and treatment - Mayo Clinic
网页2022年12月6日 · Your treatment options for skin cancer and the precancerous skin lesions known as actinic keratoses will vary, depending on the size, type, depth and location of the lesions. Small skin cancers limited to the surface of the skin may not require treatment beyond an initial skin biopsy that removes the entire growth.
Seborrheic keratosis - Symptoms & causes - Mayo Clinic
网页2022年1月18日 · A seborrheic keratosis (seb-o-REE-ik ker-uh-TOE-sis) is a common noncancerous (benign) skin growth. People tend to get more of them as they get older. Seborrheic keratoses are usually brown, black or light tan. The growths (lesions) look waxy or scaly and slightly raised.
Melanoma pictures to help identify skin cancer - Mayo Clinic
网页2023年12月16日 · Melanoma pictures for self-examination. Melanoma is a serious form of skin cancer. It often can be cured if found early. These melanoma pictures can help show you what to look for. The American Academy of Dermatology advises watching skin spots for: Asymmetry. Border irregularity. Color changes.
Squamous cell carcinoma of the skin - Symptoms and causes
网页2023年8月11日 · Squamous cell carcinoma is a common type of skin cancer. Squamous cell carcinoma of the skin is usually not life-threatening. But if it's not treated, squamous cell carcinoma of the skin can grow large or spread to other parts of the body. The growth of the cancer can cause serious complications.
Hidradenitis suppurativa - Symptoms and causes - Mayo Clinic
网页2024年6月21日 · Hidradenitis suppurativa (hi-drad-uh-NIE-tis sup-yoo-ruh-TIE-vuh), also known as acne inversa, is a condition that causes small, painful lumps to form under the skin. The lumps usually develop in areas where your skin rubs together, such as the armpits, groin, buttocks and breasts.
Psoriasis - Symptoms and causes - Mayo Clinic
网页2024年5月17日 · Psoriasis is a skin disease that causes a rash with itchy, scaly patches, most commonly on the knees, elbows, trunk and scalp. Psoriasis is a common, long-term (chronic) disease with no cure. It can be painful, interfere with sleep and make it …