Basal cell carcinoma
Basal cell carcinoma is the most common form of skin cancer, typically appearing as a slow-growing sore or bump. While it rarely spreads to other parts of the body, it can cause significant local tissue damage if left untreated.
Overview
Basal cell carcinoma is the most common form of skin cancer, typically appearing as a slow-growing sore or bump. While it rarely spreads to other parts of the body, it can cause significant local tissue damage if left untreated.
Symptoms
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Causes
- •DNA damage from ultraviolet (UV) radiation
- •Overexposure to sunlight or tanning beds
- •Genetic mutations in skin cells
Risk factors
- •Chronic sun exposure
- •Fair skin, light hair, or light-colored eyes
- •Personal or family history of skin cancer
- •History of frequent sunburns
- •Older age
How it progresses
3 stages- Stage 1 — EarlyMild or intermittent symptoms; easily mistaken for something minor.Often missed
- Stage 2 — ProgressiveSymptoms become more frequent or severe.
- Stage 3 — EstablishedDaily life affected; medical care strongly recommended.
How it's diagnosed
- •Physical skin examination
- •Dermoscopy
- •Skin biopsy (shave or punch biopsy)
Treatment options
General educational information only — no dosage advice. Always follow guidance from a qualified clinician.
- •Surgical excision
- •Mohs micrographic surgery
- •Curettage and electrodessication
- •Cryotherapy (freezing)
- •Topical chemotherapy creams
- •Regular head-to-toe skin self-exams
- •Applying broad-spectrum sunscreen daily
- •Wearing protective clothing and hats
- •Monitoring for changes in existing spots
Complications
- •Long-term damage if untreated
- •Reduced quality of life
- •Worsening symptoms over time
- •Recurrence of basal cell carcinoma
Prevention
- •Maintain a healthy lifestyle
- •See a clinician for routine check-ups
When to seek help
- •Symptoms persist beyond a few days
- •Symptoms interfere with daily activities
- •New or worsening symptoms appear
- •Concerning changes related to basal cell carcinoma
- A sore that bleeds, crusts, and will not heal
- Rapidly growing skin lesion
- Pain or numbness at the site of a lesion
- A spot that changes color or shape quickly
In any emergency, call your local emergency number or go to the nearest emergency department.
Real-world questions
- ›Can Basal cell carcinoma cause headaches?
- ›Is Basal cell carcinoma reversible?
- ›How quickly does Basal cell carcinoma progress?
- ›Is Basal cell carcinoma hereditary?
- ›Can Basal cell carcinoma be prevented?
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Frequently asked questions
Possible causes of Basal cell carcinoma include DNA damage from ultraviolet (UV) radiation, Overexposure to sunlight or tanning beds, Genetic mutations in skin cells.
Basal cell carcinoma can be serious and may require prompt medical attention, especially if symptoms are severe or worsening.
Duration varies between individuals. Many cases improve with appropriate care, while others may persist longer and require ongoing management.
Basal cell carcinoma typically benefits from medical evaluation and should not be ignored.
Consider seeing a clinician if symptoms are severe, persistent, worsening, or if you have any concerns related to general.
Sources
Information based on general medical references such as:
Last reviewed: May 2026