Understanding Different Types of Keratosis

Keratosis refers to various skin conditions involving thickened or rough patches. There are three common types:

Seborrheic Keratosis: Non-cancerous, wart-like growths in brown or black, usually seen in older adults. They’re harmless but can be removed for cosmetic reasons.

Actinic Keratosis: Precancerous spots caused by sun damage. These appear as rough, dry patches on sun-exposed areas and can turn into skin cancer if untreated.

Keratosis Pilaris: Often called “chicken skin,” this causes tiny bumps on the arms or thighs. It’s harmless but may be cosmetically annoying.

Causes & Risk Factors

Sun exposure is the primary cause of actinic keratosis. Genetics may play a role in seborrheic keratosis

and keratosis pilaris. Dry skin and hormonal changes can worsen keratosis pilaris. Fair skin and family history increase overall risk.

Diagnosis & Treatment

A dermatologist usually diagnoses keratosis visually; suspicious spots may need a biopsy.

Treatments include freezing, creams, laser therapy, or surgery, depending on the type.

Prevention

Use SPF 30+ daily, avoid tanning beds, and limit sun during peak hours. For keratosis pilaris, regular moisturizing and gentle exfoliation help.

When to See a Doctor

Seek help if a spot bleeds, grows, hurts, or concerns you in any way.

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