What is skin cancer and how does it occur?

Skin cancer is the uncontrolled growth of skin cells.  

Explanation:

They grow and divide without stopping, and they can spread to other places in your body.

Skin cancer is frequently caused by exposure to ultraviolet rays from the sun or from tanning beds.

The UV light can cause mutations in your skin’s DNA so it can’t control skin cell growth. The result is often skin cancer.

it would lead to upper respiratory infections and pneumonia.

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