The risk is greater in people who have a higher lifetime exposure to sun or other sources of UV radiation. They should always use sun protection and do regular skin checks, including self-exams and examinations by a dermatologist.
3) Precancerous Skin Conditions
Certain skin conditions can increase one’s risk of developing squamous cell carcinoma in a small minority of people, according to Cancer.net. These conditions include rough, red or brown scaly patches on the skin called actinic keratoses, as well as Bowen’s disease. They usually occur more frequently in areas exposed to the sun.
Protect your skin from the sun year-round, and examine your skin regularly. See your doctor if you notice any changes in the appearance of such patches.
4) Previous Treatment with Radiation Therapy
When someone receives radiation therapy for cancer treatment, his/her risk of developing basal cell carcinoma increases. This risk increases over time, according to Cancer.net, especially after 10 to 20 years. Thus, children who receive radiation therapy can have six times higher risk for developing basal cell carcinoma.
5) Weakened or Suppressed Immune System
People who have had a stem cell transplant or have certain diseases that suppress their immune systems such as HIV/AIDS or certain types of leukemia, have a higher risk of developing cancer, particularly squamous cell carcinoma.
Infection with HPV is another risk factor for squamous cell carcinoma if it suppresses the immune system.
Taking immunosuppressive drugs that inhibit activity in your immune system can also increase your risk of developing skin cancer.
You should be even more cautious when it comes to sun protection if you take medications that may make you more sensitive to the sun. These medications include specific types of antibiotics, anti-inflammatories, antifungals, blood pressure medications and chemotherapies.Read more in Your Ultimate Guide to Beautiful Skin