Skin Cancer Types, Symptoms, and Causes

Skin cancer types

Skin cancer is a type of tumor of the skin which can continue to invade, grow and potentially spread if left untreated.

Incidence: Common
○ More than 200,000 US cases per year
○ Requires a medical diagnosis
○ Lab tests or imaging required

Skin Cancer usually developes in areas of the body with the most sun exposure. However, it can also occur in areas of your skin not ordinarily exposed to sunlight. There are three major types of skin cancer — basal cell carcinoma, squamous cell carcinoma and melanoma.

The most frequent type of cancer in the United States is skin cancer. The two most common cancers of the skin, basal cell, and squamous cell carcinomas are curable but can be costly to treat and lead to disfigurement. The third common skin cancer, melanoma is the most dangerous and causes the most deaths. Overexposure to ultraviolet (UV) light causes the majority of these three types of skin cancer but melanoma seems more directly related to sun burns-even one burn significantly increases your risk.

Causes of skin cancer: Basal cell and squamous cell skin cancers are caused by repeated and unprotected skin exposure to ultraviolet (UV) rays from sunlight, as well as from man-made sources such as tanning beds. UV rays can damage the DNA inside skin cells.

What does skin cancer look like?

Skin Cancer requires an immediate medical diagnosis: Initially, skin cancer may appear as a rash, nodule or a patch of skin that seems irregular. Spots may bleed easily change colour. As cancer grows, the shape or size of the visible skin lesion may change, enlarge, and go deeper into the skin. Consult a dermatologist if you notice suspicious changes or evolving marks on the skin.

Types of skin cancer
Skin cancer examples
Seattle skin cancer

Our Skin Cancer Treatment:

Our board-certified dermatologists are certified trained medical doctors who have combined over 60 years of medical experience in skin care combining the latest solutions and most effective treatments for skin health. The following are some of the therapies Dermatology Associates of Seattle have used for both minimal recovery time and effective results. [ Learn More }

Our Mohs Skin Cancer Treatment:

Mohs surgery is a precise surgical treatment for basal cell and squamous cell carcinomas, and other more unusual skin cancers. [ Learn More }

Our Skin Cancer Excisonal Surgery:

While most Moh’s surgery procedures are done on the head and neck, excisional surgery is the treatment of choice for most other areas.. [ Learn More }

Our Radiation Skin Cancer Treatment:

Radiation can be an option for most forms of skin cancer and is useful for patients in whom surgery may not be an option. [ Learn More }


We genuinely care about our patients who have been diagnosed with cancerous skin growths and the experience which our board-certified dermatologists bring every day ensures both state of the art treatment and follow up. Make an appointment if you are concerned and let us take the worry out for you.