What is Skin cancer?
Skin cancer is a disease where skin cells grow uncontrollably. It develops when DNA damage, often from UV rays, triggers changes in skin cells. This can lead to tumors. Skin cancer can be serious if not treated early, as it may spread to other parts of the body. While some types are less aggressive, others can be life-threatening, affecting both morbidity, which refers to the presence of disease, and mortality, which refers to the risk of death.
What causes Skin cancer?
Skin cancer occurs when skin cells grow abnormally due to DNA damage, often from UV radiation. This damage can cause cells to multiply uncontrollably. Risk factors include excessive sun exposure, fair skin, a history of sunburns, and genetic predisposition. Behavioral factors like using tanning beds also increase risk. While UV exposure is a major cause, genetic factors can also play a role. The exact cause can vary, but these are the most common contributors.
Are there different types of Skin cancer?
Yes, skin cancer has different types. The main types are basal cell carcinoma, which often appears as a pearly bump; squamous cell carcinoma, which may look like a scaly patch; and melanoma, which is more dangerous and can appear as a new or changing mole. Basal and squamous cell carcinomas are usually less aggressive, while melanoma can spread quickly and is more likely to be fatal if not treated early.
What are the symptoms and warning signs of Skin cancer?
Common symptoms of skin cancer include new or changing moles, lesions, or skin growths. These changes can occur over weeks to months. Unique patterns include asymmetry, irregular borders, multiple colors, and a diameter larger than a pencil eraser. These characteristics, known as the ABCDEs of melanoma, help in diagnosing skin cancer. Early detection of these symptoms is crucial for effective treatment and better outcomes.
What are the five most common myths about Skin cancer?
One myth is that skin cancer only affects fair-skinned people, but it can affect anyone. Another is that tanning beds are safe, but they emit harmful UV rays. Some believe sunscreen is unnecessary on cloudy days, yet UV rays penetrate clouds. A fourth myth is that skin cancer is always visible, but it can develop in hidden areas. Lastly, many think skin cancer is not serious, but it can be life-threatening if untreated.
Which types of people are most at risk for Skin cancer?
Skin cancer is most common in older adults, particularly those over 50, and is more prevalent in men than women. People with fair skin, light hair, and light eyes are at higher risk. Those living in sunny regions or at high altitudes are also more affected. The increased prevalence in these groups is due to higher UV exposure and less melanin, which provides some protection against UV rays.
How does Skin cancer affect the elderly?
In the elderly, skin cancer may present more aggressively due to accumulated sun exposure over the years. Older adults may have more lesions and a higher risk of complications. The immune system weakens with age, making it harder to fight cancer. Additionally, older skin is thinner and less resilient, which can affect healing and increase the risk of spread. These factors contribute to more severe manifestations in the elderly.
How does Skin cancer affect children?
Skin cancer is rare in children but can occur. In children, it may present as unusual moles or skin changes. Unlike adults, children's skin is more sensitive to UV damage, which can lead to long-term effects. The rarity in children is due to less cumulative sun exposure compared to adults. However, early sunburns in childhood can increase the risk of skin cancer later in life.
How does Skin cancer affect pregnant women?
Skin cancer in pregnant women may present similarly to non-pregnant adults, but hormonal changes can affect skin appearance. Pregnancy can alter immune responses, potentially impacting cancer progression. The increased blood flow and hormonal changes during pregnancy may cause moles to change, necessitating careful monitoring. While the disease itself doesn't differ significantly, treatment options may be limited to protect the fetus, requiring a tailored approach.