14 doctors weighed in:
Is it possible to have skin cancer where the sun never shines?
14 doctors weighed in

Dr. Mike Bowman
ENT - Head & Neck Surgery
6 doctors agree
In brief: Yes, but not common
Melanomas (and other skin cancers) are most commonly caused by sun exposure, but they rarely do appear in strange places.
..I have seen/known patients who have had melanomas come up under their fingernails, in the mouth or sinuses, etc. If you notice any moles on your body which are changing, have them looked at.

In brief: Yes, but not common
Melanomas (and other skin cancers) are most commonly caused by sun exposure, but they rarely do appear in strange places.
..I have seen/known patients who have had melanomas come up under their fingernails, in the mouth or sinuses, etc. If you notice any moles on your body which are changing, have them looked at.
Dr. Mike Bowman
Dr. Mike Bowman
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Dr. Joseph Woods
Pathology
4 doctors agree
In brief: Yes.
Some melanomas (acral lentiginous) and patients with dysplastic nevus syndrome, as well as possibly some instances of other skin cancers (squamous, verrucous cacinoma, kaposi's sarcoma) can be on such areas that may be often or always covered.

In brief: Yes.
Some melanomas (acral lentiginous) and patients with dysplastic nevus syndrome, as well as possibly some instances of other skin cancers (squamous, verrucous cacinoma, kaposi's sarcoma) can be on such areas that may be often or always covered.
Dr. Joseph Woods
Dr. Joseph Woods
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Dr. Michael Fisher
Dermatology
1 doctor agrees
In brief: Skin cancer
The cause of most skin cancers is sun damage to the skin.
About 9 in 10 non-melanoma skin cancers, and about 6 in 10 melanomas are thought to be caused by excessive exposure to the sun. In particular, past episodes of sunburn significantly increase the risk. It is the ultraviolet (uv) radiation in the sunshine which does the damage. Skin cells which are damaged are at greater risk of becoming abno.

In brief: Skin cancer
The cause of most skin cancers is sun damage to the skin.
About 9 in 10 non-melanoma skin cancers, and about 6 in 10 melanomas are thought to be caused by excessive exposure to the sun. In particular, past episodes of sunburn significantly increase the risk. It is the ultraviolet (uv) radiation in the sunshine which does the damage. Skin cells which are damaged are at greater risk of becoming abno.
Dr. Michael Fisher
Dr. Michael Fisher
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Dr. Joseph Eastern
Dermatology
In brief: Yes.
Sunlight is thought to be responsible for a majority of skin cancers, but they do indeed occur on areas receiving little or no sun exposure.
So obviously there are factors other than sunlight involved in causing skin cancer.

In brief: Yes.
Sunlight is thought to be responsible for a majority of skin cancers, but they do indeed occur on areas receiving little or no sun exposure.
So obviously there are factors other than sunlight involved in causing skin cancer.
Dr. Joseph Eastern
Dr. Joseph Eastern
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