Squamous cell carcinoma (SCC) is a type of skin cancer that is quite common, second only to another major type of skin cancer. About 2 in every 10 skin cancers are SCC.

SCC develops when the skin is damaged by ultraviolet (UV) rays from the sun. Over time, this damage can cause the top layer of skin (squamous cells) to grow abnormally, which may eventually turn into cancer.

This type of cancer can show up anywhere on the body, but it's most frequently seen on areas that receive a lot of sun, such as the face, ears, neck, arms, and hands.

The good news is that SCC is usually treatable, especially if it is found early. But if it is ignored, it can become serious or even life-threatening. That's why regular skin checks and early action are so important.

What Causes Squamous Cell Carcinoma?

1. UV Exposure from the Sun

Long-term exposure to ultraviolet (UV) radiation is the primary risk factor for SCC. Both UVA and UVB rays damage skin cells over time. Nearly 90% of non-melanoma skin cancers, including SCC, are linked to UV exposure.

2. Age & Gender

Age and gender is also an important factor of squamous cell carcinoma cause. SCC is more common in people over 50 years old.
Men are nearly twice as likely to develop SCC, although rates in women are increasing.

3. Weakened Immune System

People with suppressed immune systems due to illness, organ transplants, or certain medications are more vulnerable to SCC.

4. Indoor Tanning

Tanning beds emit concentrated UV radiation that significantly increases skin cancer risk.
People who use tanning beds have a 67% higher risk of SCC than those who do not.

4. Previous Skin Cancer

A personal history of squamous cell carcinoma, basal cell carcinoma (BCC), or melanoma increases the likelihood of developing skin cancer again.

5. Fair Skin

Although anyone can develop skin cancer, people with:

• Fair or freckled skin
• Light-colored eyes
• Red or blonde hair
• A tendency to burn easily

have a higher risk.

7. Chronic Skin Damage

Areas of skin affected by:

• Old burns
• Long-standing scars
• Chronic wounds or inflammation

can sometimes develop SCC, though this risk remains low.

Symptoms of Squamous Cell Carcinoma

SCC often develops in sun-exposed areas such as the face, ears, neck, scalp, chest, shoulders, and hands, but it can appear anywhere.

Watch for:

• Rough or scaly red patches that may crust or bleed
• Thick, raised nodules with a central dip
• Open sores that do not heal or keep returning
• Wart-like growths
• Scaly patches on the lips that may form open sores
• Red or rough patches inside the mouth

If any spot changes in size, color, texture, or shape, it should be assessed by a healthcare professional.

 

Prevention and Early Detection

The earlier SCC is detected, the easier it is to treat.

You can reduce your risk by:

• Avoiding tanning beds
• Using sunscreen daily
• Wearing sun-protective clothing
• Performing regular skin self-checks

How DermPro Supports Early Skin Checks

Understanding what causes squamous cell carcinoma (SCC) and knowing the warning signs can help you take action early, when treatment is most effective. While DermPro does not diagnose or treat cancer, it is designed to support early awareness and encourage timely medical care.

DermPro is not a diagnostic tool and does not replace a dermatologist. It is intended to assist users in monitoring skin changes and encouraging early professional assessment.