FAQ - Skin Diseases, Metabolic
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Is there any skin diseases caused by sun?

I know skin cancer is one of them ,, but can sun alone cause any other diseases .. thanking you in advance !

Acute effects of sun exposure

The acute adverse effects of sun exposure on the skin include phototrauma (sunburn), photosensitivity, and tanning.

PHOTOTRAUMA--This is the initial actinic or solar insult to the skin. Redness is produced by vasodilation and increased blood flow in the dermis. Biochemically, it is a manifestation of (1) damage to membranes and to DNA, (2) transient disturbances in protein synthesis, and (3) elaboration of many cytokines and inflammatory mediators.[2] Pain and itching are produced by the effect of chemical mediators on the nerve endings.

All three wavelengths of UV radiation (see box on page 54)[14] cause phototrauma. The epidermis absorbs ultraviolet C (UVC) and UVB radiation, but UVA radiation penetrates into the dermis,[5] where the potential for damage is greater.

Sunburn is delayed in its onset, usually becoming evident 2 to 6 hours after exposure and reaching maximum intensity after 15 to 24 hours.[2] It is less severe in persons over age 60 than in those under age 30. However, redness persists longer in older persons.[5]

PHOTOSENSITIVITY--This refers to an abnormal response of the skin to sun exposure.[2] It includes phototoxic and photoallergic reactions and polymorphous light eruption.

PHOTOTOXIC REACTION--This reaction presents as an exaggerated sunburn (ie, far more severe than expected from the length of exposure) after ingestion of or contact with a photosensitizer.[6] Because this reaction is not mediated immunologically, it may occur in anyone.[6]

Photosensitizers are usually polycyclic compounds capable of absorbing UVA radiation; therefore, most phototoxic reactions are caused by UVA exposure.[6] The drugs most commonly implicated in phototoxic reactions are thiazides (figure 1), sulfonylureas, sulfonamides, tetracyclines, phenothiazines, psoralens, nalidixic acid, and coal tar.[2] Exposure to sunlight after skin contact with plants containing psoralens or furocoumarins (eg, limes, parsley, celery, bishop's-weed, figs) can cause topical photosensitivity.[2,6]

PHOTOALLERGIC REACTION--This abnormal response of chemically exposed skin to sunlight occurs when the immune system is involved.[6] The reaction appears more as a rash than as a sunburn. Essentially, all phototoxins are also photo-allergens.[6]

POLYMORPHOUS LIGHT ERUPTION--This is the most common abnormal response of skin to sunlight and may affect up to 10% of the population.[6] The response is often triggered by the first intense exposure to the sun in the spring or during a southern midwinter vacation. Patients usually call it "sun poisoning" or "sun allergy."[6] Within hours after the patient sunbathes, itchy papules and plaques occur over some, but not all, exposed areas (figure 2). They gradually subside 1 to 2 weeks later if the patient avoids further exposure to the sun. There is no systemic involvement.[6]

(see link for many more details)  (+ info)

Can anyone list down skin diseases that start with R or contain the letter R?

I'm trying to remember something. Please help! :D

cancer psoriasis genital warts pruritus herpes  (+ info)

How do you know if you have ring worm or MRSA (Staph) skin diseases?

I need to know the side effects as well. Someone please help me.

(The pusy one is infected...its not the normal fungal infection)


Ringworm doesn't change in size or color and it itches like hell (doesn't hurt unless you scratch open the ringworm.  (+ info)

Can Veet cause cancer or skin diseases?

I used it on a small circle on my leg and it actually worked. Now I read on here that someone said that you can get cancer or diseases from it. I wouldn't think so, though. Is it true?

  (+ info)

Can you get herpes and other skin diseases from public restrooms?

No. Genital herpes and other STDs are almost ALWAYS spread by sex or some sort of sexual contact. It can NOT be spread by using a toilet seat after someone, using a shower or tub after them, using a chair after them, a pool, jacuzzi, door knob, etc. You need DIRECT skin to skin contact.

I have had genital herpes and HPV for over 6 years now. I lived with my parents and brothers most of those 6 years (I contracted both viruses when I was 17). NONE of my family members ever got herpes or HPV from me by using something after me like the toilet or shower. I've also had several other family members and boyfriends (now ex's) use the bathroom after me and NONE of them ever contracted either virus. They are just not spread that way.

Crabs, or pubic lice, may be transmitted an infested toilet seat. However, lice cannot survive away from the human body for longer than 24 hours. So contracting pubic lice from a toilet seat is possible, but it's unlikely.

Good luck!  (+ info)

What type of Sexually Transmitted diseases or skin diseases can be acquired through body to body massage?

If your just talking skin to skin there are a few like

Hpv the cause of genital warts


and some more im sure i got those from

http://yourstdhelp.com  (+ info)

Can benzoyl peroxide cause cancer, premature aging, and other skin diseases by itself?

Let's hope not, cause then I'm screwed!  (+ info)

Is amoxicillin good a treating acne or skin diseases?

Is it similar to pennacillin because when I took that I had no acne...

I have never heard of anyone using penicilin to treat acne. They are similar, both beta lactams, but taking a p.o. beta lactam for the purpose of acne has risks, including the development of antibiotic resistant bacterial infections in the GI tract as well as side effects such as diarrhea.  (+ info)

are there any tick born diseases wher the tick does not burrow under the skin but deposits bacteria which eat?

which eat white blood cells? my white blood cell count is .2 and no one can tellme what is wrong can anybody help?

If your regular doctor doesn't know, ask for a referral to a specialist - like an infectious medicine or hematologist. Don't ask for guesses from people without all of the info.  (+ info)

what kind of skin diseases do i have?

i have this rushes on both of my legs and it spreads so quickly sometimes its itchy i am under medication from yesterday and it look like the cream i was prescribe is not working?

It will work as long as you don't expose the infected area to oxygen or the air, my advice would be to keep the infected area covered as possible for fast healing, do not itch as it'll make it a bacteria inhabiting ground for new ones to enter your body, don't want that now do we, just keep applying cream to the irritated area and keep it covered.  (+ info)

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