Skin Cancer

Skin cancer is the most common form of cancer and is caused by abnormal growth of skin cells. Skin cancer can be caused by sun exposure and smoking.

3,145 Questions
Skin Cancer
Medication and Drugs
The Difference Between

Does sunscreen expire?

Sunscreen does expire.The molecules in suntan lotion (such as homosalate and octyl salicylate) block the penetration of UV radiation by acting as filters and absorbing and reflecting high energy UV. Over time these molecules break down and lose effectiveness, kind of like expired cold medicine or vitamins. How do you know when it's expired?

There is a common belief that sunscreen is only good for one season. Some will have expiration dates printed on them. However, most sunscreens do not have expiration dates printed on them. Instead "lot numbers" can be used to determine the date the product was manufactured.

For Coppertone products, the first character of the lot code represents the year of manufacture (7=2007, etc). The second character is a bit more involved. It will tell you the month of manufacture using this code: A=Jan, B=Feb, C=Mar, D=Apr, E=May, but then G=June, H=July, J=Aug, K=Sept, M=Oct, N=Nov, and P=Dec.

Per Scherring-Plough (the mfr of Coppertone) their SPF sunscreens have a shelf life of 3 years from the date of manufacture.

For Banana Boat products, the first 2 digits of the code represent the year it was made (07=2007, etc.) and the next 3 digits represent the day of the year (32=Feb 1st, 365=Dec 31st, etc). They also state a shelf life of 3 years.

Skin Cancer
Breast Cancer

Is itchy skin a sign of cancer?

General itching is not a typical sign of breast cancer. However, there is a disease called Paget's Disease of the Breast which is a malignant condition. Itching and scaliness of the nipple is one sign of that disease.

Itchiness is not a sign of skin cancer. Any changes in your body should be checked out by a physician.

Skin Cancer
Skin Care

Can HPV cause skin tags?

No, skin tags are usually caused by friction. Hpv causes warts usually in the vagina, penis, mouth, or genital region. The warts and lesions are very distinct they are usually cauliflower like. Don't worry about a skin tag. If you are not being safe and using protection it would not be a bad idea to get tested.

Actually, skin tags are nothing more than out of control skin cell growth. Cut them off and there is a chance that they will grow back.

HPV causes warts which is a virus. A skin tag is not the cause of a virus.

There are some natural ways to remove a skin tag but the most effective (and quickest) way is to go to a dermatologist and have them cut it off.


HPV lesions are typically found on mucuos membranes, the genitals or lips. You probably are developing small benign skin tags. Talk with a dermatologist. They can easily be burned, frozen, or surgically excised in the office.

More input from FAQ Farmers:

HPV is a sexually transmitted disease that is cause by Human Papilloma Virus. There are approx. 60 different stains of this virus, 5 of those have been implicated in causing cervical cancer. There is no evidence the virus is transmitted any way other than sexual contact. Skin tags are benign lesions found on the skin, most commomly in the arm pit, groin, and neck, and have no relationship to HPV. There may be a hereditary tendency to develop these lesions which are usually asymptomatic, however they can be irritated by rubbing on clothing and need removal.

Skin Cancer

What happens to the cells during skin cancer?

The cells die of and it takes a while for the new cells togrow back but if you live through it and the cancer is ALL the way gone then eventually the cells come back! :)

Skin Cancer
Eye Floaters

What is the hard lump on the inner corner near eye It is NOT on the eyelid just near the corner of the eye?

What it is is called milia. It is a keratin filled cyst. It is actually underneath the skin, so you can't pop it like a normal pimple. I've had two, both in the exact same spot. What is suggested is that you have it extracted (essentially popped) by a dermatologist. However, I did it at home using a sterile needle and clean hands. This could incur scarring or an infection, so I am not necessarily recommending home treatment. Also it hurts pretty bad and, honestly, it's hard to get the needle in the right spot since the skin on top is so tough. But it worked.

Prevention methods include mild exfoliation, less make-up (or better for you makeup and like products), and less sun exposure.

Causes include heredity, sloughed-off skin, sun exposure, and clogs due to oil, make-up, and the like.

In other words, it's harmless. You don't have cancer or any sort of disease. You basically have an annoying pimple.

Skin Cancer

What is a prevention strategy for skin cancer?

Do not lay out to get a tan Go to the beach in the morning or the evening Swim when there is shade on the pool and not in the hottest part of the day Use sunscreen of a high factor wear hats wear long sleeves don't do yard work in the hottest part of the day stay out of the sun as much as possible think before you do and ask will I burn?

Skin Cancer
Skin Care

Is visible skin dead?

Yes and no. Skin is translucent. The very outer layer of skin cells can technically be determined dead, however you can see through them to the layers which are still growing. In addition the skin happens to be the largest organ in the human body.

Conditions and Diseases
Skin Cancer

Can you get ink poisoning by writing on your hands?

If you could, most adolescents would have it. According to the NIH (see the link to the right), you would need to ingest more than an ounce of writing ink before it's likely to be a problem. With this data, we can answer this question as a definitive no.

Skin Cancer

Is The biggest risk factor for the development of skin cancer is excessive exposure to ultraviolet light?


Skin Cancer
Alternative Treatments for Conditions or Diseases

Where can you buy black salve in the US? is a US based company that ships worldwide. You can also try, formerly They're located in Equador but will ship to US.

Skin Cancer

What is an asymmetrical mole?

A cancerous mole may have two halves of unequal size

Skin Cancer

Do hereditary factors increase the chance of getting cancer?

Yes, having past family members (parents and grandparents) who have died from cancer, increases the chances that you will also get cancer. Further risk factors are diet, lifestyle choices (smoking and sexual practices) as well as sun exposure (skin cancer) and use of illegal drugs (injected or smoked).

Skin Cancer

What can one expect if a biopsy comes back showing a basal cell skin cancer?

It must be surgically removed otherwise it could eventually become full blown skin cancer. Basal cell carcinoma is very common and nothing to worry about . Removal is simple and normally 100 % effective with no further action needed Nothing to worry about? Yeah, nothing to worry about, except expensive operations and possibly death. If they're lucky enough to remove it on the first try, it might not be as expensive, but you'll have a serious scar for the rest of your life. Not only that, you might have to go though chemotherapy, and everyone knows about the side effects of that.

Conditions and Diseases
Skin Cancer

How do you know if you have skin cancer?

You should be regularly checking yourself, especially parts of your body that get exposed to the sun, for of the following. Your doctor should also watch for these in your regular physicals. If you're in an especially high-risk group, you may want regularly schedule professional examinations of your skin. Here's what to look for: A small, fleshy bump with a smooth, shiny, or pearly appearance. A firm, scarlike lesion. A bump that repeatedly bleeds and crusts over or hasn't healed for more than three weeks. A red or tender flat spot that bleeds easily. A transparent bump with tiny, visible blood vessels. A smooth bump with a raised border and indented middle. A red, irritated, crusty patch of skin that doesn't heal. A shiny area of tight-looking skin, especially on the face, that looks like a scar and has poorly defined edges. Any growth in a wart or mole. Any change in the surface of a skin growth. Any asymmetry or irregularity in the shape in a skin growth, e.g., if it's not an even shape on both sides, or the edges are jagged. Any asymmetry or change in the color of skin growth, e.g. it's brown or black, or has dashes of these colors, or even red, blue, or white. Any sore that does not heal. In addition, early symptoms of a malignant melanoma might be if a mole gets thicker, or becomes worn down and crusty, or soft and flaky, or if it itches or burns. In later stages, a melanoma could turn into an ulcerous sore, or become painful and bleed.

Skin Cancer

Why do people who work outdoors at greater risk of getting skin cancer?

The main principle behind this claim is that outdoor workers have a greater exposure to the sun. Excess exposure to the sun has been linked to melanoma and other skin cancers.

The sun releases ultraviolet (UV) radiation which is harmful in large doses. UV rays are classified into UV-A, UV-B, and UV-C, all of which can contribute to skin cancer. UV rays travel like any ordinary waves and can penetrate into the skin. A chemical in the skin called melanin, which pigments skin, absorbs some of the UV radiation to protect the body. Sunburn occurs when the UV radiation exceeds the amount melanin can absorb.

As with any ionizing radiation, it can cause the genetic codes and cells to undergo a mutation, causing cells to change functions and in some cases divide uncontrollably.

If you work outdoors, it is vital you protect yourself from excess sun exposure. Always find shade if possible, apply SPF 30+ sunblock lotion, wear a hat, wear UV safe sunglasses and cover exposed body parts.

Any mole or freckle that changes its shape, size of colour should be reported immediately to your medical doctor for evaluation. If you suspect any abnormal skin changes, have it checked by a medical doctor for possible skin cancer.

Skin Cancer
Lymphatic System

How long does it take to determine whether a lymph node has cancer or not?

In my case, it took about a week. It was reviewed after the biopsy by my local hospital pathologist and then sent to Stanford Medical center for a confirmation. So it could take up to 10 days to be absolutely positive. Mine turned out to be Hodgkins Lymphoma. Good luck, Kristin

Skin Cancer

Are all skin types harmed by the sun's rays?

Yes. Different skin colors my take longer to damage but in the end all skin gets damaged by the sun.

Skin Cancer

What kind of light causes skin cancer?

Ultraviolet, or UV rays.

Skin Cancer
Colorectal and Colon Cancer

Does dietary fiber reduce the risk of cancer?

I know that I ate a very high fibre diet most of my life but was diagnosed with ovarian cancer, so I would say no to your question. Other factors could contribute to getting ovarian cancer, such as the other foods eaten and the environment. There are scientists who say that fibre can decrease the chance of cancer, so I guess that Fibre can help, but there is currently no definite answer. Hope this helps!

Skin Cancer

Cancerul de piele este transmisibil?

Cancerul, inclusiv cel de piele, nu este o boală contagioasă.

Skin Cancer
Workplace Health and Safety

Why do downhill skiers wear goggles?

Ski goggles protect you from both the sun's glare off the snow and snow, sleet, or another kind of precipitation from getting in your eye. Snow is the 3rd most reflective surface and ski goggles take the place of sunglasses. Also when you ski snow or other precipitation can fly into your face and ski goggles can protect you from this getting in your eyes.

Skin Cancer

How is someones life affected by Melanoma?

Someone with melanoma, being the worst type of skin cancer, will have to alter their life extremely if they want to live. A really few number of people survive Melanoma. In radical cases

Gerson Therapyis suggested.

Needs a lot of willpower to do this one.

Skin Cancer
Skin Care

What happens if a mole appears on your chest?


Skin Cancer
Moles (animal)
Skin Disorders
Spanish to English

What does it mean when your mole scabs?

If it got bumped or rubbed, a mole may bleed. However, if you notice that it doesn't heal, or frequently has a scab on it, get to a dermatologist without delay. It may or may not be a skin cancer, but prevention is the best.

Conditions and Diseases
Skin Cancer

How do you get skin cancer?

Most commonly, you get skin cancer from being overexposed to the sun, either over a period of many years, or from a few bad sunburns, especially sunburns as a child. You might also get skin cancer from exposure to other forms of radiation and some chemicals, but that's not typical. There are risk factors that increase your changes of getting skin cancer, such as a family history of it, and light-colored eyes, hair, and/or skin. You can also get skin cancer by using tanning beds. Of course they don't want you to know this so that they (tanning beds companies) can stay in business. However, if there is any dirt or too much lotion on your body it interferes with the rays causing them to penetrate deeper under your skin than originally intended. I did not believe this until it happened to me. Love your natural skin color!!


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