The most frequent kind of cancer in the United States is skin cancer. Every year, almost 2 million cases are diagnosed. By the age of 70, over 20% of persons in the United States will have had skin cancer at least once.

Melanoma is caused by melanocytes in the skin, although there are other non-melanoma skin malignancies. Basal cell cancer, squamous cell carcinoma, and Merkel cell carcinoma, Kaposi’s sarcoma, and T-cell lymphoma of the skin are among them.

The uncontrolled proliferation of cells in the skin is characterised by skin cancer. Nonmelanoma and melanoma skin cancers are the two forms of skin cancers. They are responsible for almost half of all cancer cases documented.

Melanomas are pigmented cell tumours that are far more dangerous than nonmelanoma cancers, which are the most common cancers in the United States.

Surface malignancies are known as nonmelanomas (carcinomas). Nonmelanoma may be classified into two types, both of which can be treated with simple surgery.

Squamous cell carcinomas are a kind of nonmelanoma that develops from a layer of flat cells near the skin’s surface. They account for around one-fourth of all nonmelanoma cases.

Basal cell carcinomas account for nearly three-quarters of all occurrences, and up to 50% of individuals with this kind of cancer acquire a second skin cancer within five years after their first diagnosis.

A layer of cells beneath the squamous cells is where basal cell carcinoma starts. The epidermis is home to both the squamous and basal cell layers.

What is Skin Cancer?

Skin Cancer is a malignant proliferation of cells that make up the skin that is uncontrollable. According to the American Cancer Society, nonmelanoma skin cancer affects more than 2M individuals in the United States each year, whereas melanoma affects more than 76,000.

Top 3 Common Types of Skin Cancer | Symptoms of Skin Cancer 2021
Skin Cancer 

Skin cancer is the most frequent malignancy in the United States, and the number of cases is on the rise. It is characterised by the unregulated proliferation of aberrant skin cells.

Cancer cells divide and expand in an arbitrary, fast manner, whereas healthy cells divide and grow in an ordered manner. Tumors are either benign (noncancerous) or malignant (cancerous) as a result of this fast development (cancerous).

Who get’s Skin Cancer?

Skin cancer primarily affects elderly people, although it can also afflict younger people and, in rare cases, children.

  • Persons with light skin (Fitzpatrick skin phototypes I, II, and III) are more likely to get skin cancer, while people with darker complexion can still acquire skin cancer.
  • People who have had skin cancer are more likely to acquire other types of skin cancer.
  • A family history of skin cancer also raises your chances.
  • Certain genes, such as the melanocortin-1 receptor, have been linked to a higher risk of skin cancer.

Risk Factors

Skin cancer is more likely to occur in those who have specific risk factors.

Distinct forms of skin cancer have different risk factors, however some common ones include:

  • A natural skin tone that is lighter.
  • You have a family history of skin cancer.
  • Work and play activities that expose you to the sun.
  • A history of sunburns, particularly as a child.
  • A background in indoor tanning.
  • In the sun, skin that burns, freckles, reddens readily, or becomes uncomfortable.
  • Eyes that are blue, grey, or green.
  • Hair that is blond, red, or light brown.
  • A vast number of moles of different varieties.
  • A history of being exposed to ionising radiation.
  • An immune system that is continuously repressed (immunosuppression) as a result of underlying disorders like HIV/AIDS or cancer, or drugs like prednisone or chemotherapy.
  • Ionizing radiation (X-rays) or substances that are known to cause cancer, such as arsenic
  • Certain forms of wart virus infections acquired through sexual contact
  • People who have had one skin cancer before have a 20% probability of getting a second one in the next two years.

Symptoms and Signs

Skin malignancies can present themselves in a variety of ways, depending on the type of cancer and the patient.

The following are some of the most common signs and symptoms of skin cancer:

  • Moles that are new or that are changing (often in melanoma)
  • New red lumps or scaly areas that do not go away
  • Wounds that do not heal
  • A small, glossy lump or nodule on the skin, usually in sun-exposed regions including the head, neck, arms, hands, and face (basal cell carcinoma)
  • On sun-exposed regions such as the cheeks, ears, lips, and mouth, nodules or red, scaly patches of skin (squamous cell carcinoma)
Top 3 Common Types of Skin Cancer | Symptoms of Skin Cancer 2021
Skin Cancer 

Examination ABCDE

The ABCDE inspection of moles is a useful tool for detecting malignant tumours. It outlines five easy traits to look for in a mole to confirm or rule out melanoma:


Noncancerous moles are usually spherical and symmetrical, however cancerous moles have one side that differs from the other.


This is likely to be jagged, notched, or smudged rather than smooth.


Melanomas come in a variety of hues and colours, including as black, brown, and tan. They might also have white or blue colouring.


Melanoma can cause a mole’s diameter to alter. A mole that grows to be more than a quarter of an inch in diameter, for example, might be malignant.


A change in the appearance of a mole over weeks or months might indicate skin cancer.

Top 3 Types of Skin Cancer

Skin Cancer is a broad phrase that refers to a variety of malignant skin illnesses.

The following are the most prevalent forms of skin cancer:

  1. Basal Cell Carcinoma (BCC)
  2. Squamous Cell Carcinoma (SCC)
  3. Melanoma
Top 3 Common Types of Skin Cancer | Symptoms of Skin Cancer 2021
Skin Cancer 

1. Basal Cell Carcinoma (BCC)

Basal cell carcinomas are the most frequent kind of skin cancer, accounting for 90 percent of all occurrences. Slow-growing lumps that usually appear on the head or neck.

It all begins in the epidermis’ basal cells. About 70% of non-melanoma skin malignancies are caused by this. BCC is a slow-growing cancer that seldom spreads to other regions of the body and develops slowly over months or years.

It is simpler to treat a BCC if it is detected early. It can spread deeper into the skin and destroy adjacent tissue if left untreated, making treatment more difficult. If you already have one BCC, you’re more likely to develop another one.

Multiple BCCs on different places of the body might be used at the same time.

2. Squamous Cell Carcinoma (SCC)

This skin cancer originates in the outer layers of the skin and is usually more severe than basal cell carcinoma. It may appear on your skin as red, scaly sores.

Squamous cell carcinoma (SCC) is characterised by a hard pink mass with a rough or crusty surface. There can be a lot of surface scale and even a spiky horn protruding from the surface at times.

When touched, the lump is sensitive, bleeds quickly, and has the potential to develop into an ulcer. If the tumour is not treated, it can cause significant skin damage in both SCC and BCC patients.

3. Melanoma

Melanoma is a kind of skin cancer that can swiftly spread to any part of the body if not detected early. Even sun-protected skin can acquire it.

Top 3 Common Types of Skin Cancer | Symptoms of Skin Cancer 2021
Skin Cancer 

Melanoma might appear as a persistent pink lump that is expanding or bleeding. It may resemble a brown mole that is changing form, colour, size, or texture.

Moles are pigment cells (melanocytes) that have gathered in one place. Melanoma develops when melanocytes become cancerous. Melanoma may develop in any part of the body.

It might emerge as a new lesion or grow out of an existing mole. Melanoma can be detected by a change in the form, size, or colour of a mole, as well as the abrupt emergence of a new dark brown or black mole.

Melanoma can be caused by a number of reasons. Sun exposure is a key risk factor for both basal cell carcinoma and squamous cell carcinoma. A family history of melanoma and having a lot of (atypical) moles are also risks.

Melanomas must always be surgically removed since they have a high risk of spreading. The less likely melanoma is to spread to other regions of the body, the thinner it becomes.

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