Bowen's Disease: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Bowen's Disease?
A dermatologist (a skin doctor) usually diagnoses and treats Bowen's disease. A surgeon may remove the patch, and sometimes a plastic surgeon helps with healing and appearance. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Bowen's disease?
Bowen's disease is the earliest form of squamous cell skin cancer. It is also called squamous cell carcinoma in situ, which means the abnormal cells sit only in the outermost layer of the skin. It causes a red, scaly patch to form on the skin. Because the cells stay in the top layer, it does not spread to nearby tissues. But if it is not treated, it can grow into a true invasive skin cancer over time.
The patch usually grows slowly. Most people get a single patch, though some people get more than one. It is most common in adults over age 60 and in people with fair skin and a lot of sun exposure.
Symptoms
The main sign is a slow-growing, red, scaly patch with a clear border. Common features include:
- A flat, reddish patch with a rough or scaly surface, that can be larger than 1 inch (2.5 cm).
- Scaling that may look like psoriasis, an itchy skin condition with flaky patches.
- Itching in some cases.
- Slow growth over time.
Ulceration (a sore), bleeding, or a new nodule (a raised lump) can be signs of invasive cancer. The patch can look like nummular eczema, psoriasis, warts, or other skin conditions, so a proper skin exam matters.
Causes and who gets it
Several factors add up to cause it. The major ones are ultraviolet light exposure, a weakened immune system, and human papillomavirus (HPV) infection. HPV types 16 and 18, among others, have been found in these patches. Arsenic exposure is another known cause, and it can show up decades after the exposure.
Bowen's disease usually affects people over age 60 and is rare under age 30. It is most common in fair-skinned people with high sun exposure, and it often appears on sun-exposed areas such as the head, neck, and lower legs.
How doctors diagnose it
A dermatologist examines the skin and its size, shape, color, and texture. A skin biopsy, meaning removal of a small sample of skin, must be done to confirm the diagnosis. The tissue exam under a microscope is the gold standard for confirming Bowen's disease.
Treatment
Treatment depends on the size and location of the patch, the patient's age and immune status, and how the wound will heal. Options include:
- Surgery, such as cutting out the patch (excision) or Mohs surgery, which works well in hard-to-treat areas and for patches that have come back.
- Cryotherapy, a freezing treatment that kills the abnormal cells.
- Curettage with electrodessication, which scrapes off the patch and uses electricity to kill any cells that remain.
- Skin creams such as 5-fluorouracil or imiquimod, an immune-boosting cream.
- Photodynamic therapy, which uses a light-sensitive cream and a special red light to destroy abnormal cells.
For small patches with good wound healing, curettage is often a first choice, followed by cryotherapy. Photodynamic therapy is often preferred where healing is poor, and cryotherapy is a first choice for multiple patches.
When to see a doctor
Contact your doctor for an appointment if you have a sore or spot on your skin that changes in appearance, color, size or texture. Also contact your doctor if a spot becomes painful or swollen, or if it itches. See a dermatologist right away if a patch bleeds, breaks open into a sore, or grows a lump, because these can be signs of invasive cancer.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. Either can look at a skin patch that worries you, check your skin during longer visits, and send you to a dermatologist for a biopsy. They can also keep up follow-up visits after the patch is treated.
Common questions
Is Bowen's disease serious?
It can be serious if it is not treated. It is an early, noninvasive form of skin cancer, and it is highly treatable. The risk of the patch turning into invasive cancer is around 3% for patches outside the genital area.
Can Bowen's disease spread?
Not while it stays in the outermost layer of skin. It does not spread to nearby tissues at that stage. A patch that stays in the top layer does not carry a risk of spreading (metastasis), but some patches that become invasive cancer can.
How is it different from squamous cell skin cancer?
Bowen's disease is the earliest form of squamous cell skin cancer, with abnormal cells only in the top skin layer. Invasive squamous cell cancer has grown past that layer and can spread.
Does the patch hurt?
Usually not. Classic patches cause no symptoms, though larger ones can itch. Bleeding or a new lump is a reason to see a dermatologist right away, and pain is a reason to contact your doctor.
Sources
- Indian Dermatology Online Journal - Bowen's Disease (browser-verified)
- MedlinePlus - Squamous cell skin cancer
- American Academy of Dermatology - Squamous cell carcinoma: From symptoms to treatments
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
