In this Article

• What is sunburn?
• Can sunburn cause permanent damage?
• What is UV light?
• When and where are UV rays most intense?
• What are the symptoms of sunburn?
• What first-aid measures should be taken with sunburn?
• Is there any medical treatment for sunburn?
• Is a follow-up visit with a physician necessary?
• Why does the skin tan after exposure to UV rays?
• Who is most susceptible to sunburn?
• Can diseases cause a heightened sensitivity to UV rays?
• What kinds of cancer can UV rays cause?
• How can sunburn and skin cancer be prevented?
• How do sunscreens work?
• What is SPF?
• What is the best way to apply sunscreen?
• Do sunscreens expire?
• Can antioxidants protect against sunburn?
• Sunburn At A Glance
• Pictures of Best Sun-Care Products - Slideshow
• Sunburn and Sun Poisoning Glossary
• Sunburn and Sun Poisoning Index

What kinds of cancer can UV rays cause?

Overexposure to UV rays can cause three varieties of skin cancer; malignant melanoma, basal cell carcinoma, and squamous cell carcinoma.

Malignant melanoma

• Malignant melanoma is by far the most dangerous form of skin cancer.
  
  
• The current lifetime risk of developing a melanoma is approximately 1/60.



• Melanomas may begin from changes in a pre-existing mole or birthmark, or arise as a brand new mole from otherwise clear skin (de novo).
  
  
• Multiple features are more common in melanomas versus regular moles including asymmetry, irregular borders, multiple colors, and size larger than a pencil eraser.
  
  
• Melanomas may be black or brown - and sometimes red, white or blue, or a mixture of those colors.
  
  
• Melanoma can spread (metastasize) rapidly. If diagnosed early, melanoma is often curable. However, if the diagnosis is delayed, melanoma can spread and may be potentially fatal.

Basal and squamous cell carcinomas

Basal and squamous cell cancers are slow-growing and are far less likely to metastasize (spread to other parts of the body) than melanoma. Both basal and squamous cell cancers can be cured in at least 90 percent of the cases if diagnosed early.

Basal cell carcinoma

• Basal cell carcinomas are flattened, pearly, small bumps with translucent edges and slightly depressed centers.
  
  
• They may bleed.
  
  
• Usually, they appear on the head, neck, upper trunk, and hands.
  
  
• If ignored, these cancers can cause considerable localized damage.

Squamous cell carcinoma

• Squamous cell carcinomas are rough patches or crusty scaly areas on the skin that do not clear up and do not respond to the usual skin creams.
  
  
• They may bleed a little.
  
  
• They tend to appear particularly on the ear rims, face, lower lip, and hands.
  
  
• f ignored, they can spread to other parts of the body.

These conditions are very common and if diagnosed properly and promptly, they are highly curable. Therefore it is very important to have routine skin checks by a trained skin doctor (dermatologist) annually. Annual screening can help in early diagnosis of skin cancer or pre-cancerous conditions that may lead to skin cancer.

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• Mohs Surgery - Find out about Mohs micrographic surgery, a procedure that removes skin cancer under local anesthetic. Read about complications, reconstruction, recovery, treatment and scarring.
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