Questions tagged [dermatology]

Use this tag for questions about skin, nails or hair. This includes questions about normal structure or function as well as diseases or pathology.

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21 votes
2 answers
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Do we produce Vitamin D in the shade?

Do our bodies produce Vitamin D in the shade? If so, what is the percentage decrease in the amount of Vitamin D produced compared to full exposure to sunlight? For example, sitting outside in the ...
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18 votes
2 answers
4k views

Does frequent showering change the amount of oils our skin produces?

The skin produces natural oils, but when we shower, we remove those with water and wiping down. I'm wondering if our bodies adjust to the constant showering by producing oils faster. Sometimes, if I ...
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  • 4,896
14 votes
3 answers
507 views

Does the usage of sunscreen cause skin cancer?

I have heard that usage of sunscreen products causes skin cancer. Is this true, and if so, what are the ingredients in it that are reason for such a medical condition. Are there any safe products or ...
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  • 3,354
14 votes
1 answer
2k views

What needs to be exposed for the body to produce Vitamin D?

What parts of the body need to be exposed to sunlight for the body to produce Vitamin D? Some say it's the skin, some say it's the eyes, and some say it's a combination. The most common answer I ...
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13 votes
1 answer
253 views

How does poor sleep cause circles under one's eyes?

I've read that poor sleep causes circles under one's eyes. Also, I've read that they are caused by dehydration. Is it safe to assume that the way poor sleep causes the circles is by causing ...
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12 votes
1 answer
199 views

What are the risks of vitiligo, and how should I keep myself safe?

I have vitiligo, and have done for the last couple of years. I am not worried about how it looks, and I know about camouflage makeup - I chose not to use it. I am concerned, however, about the risk ...
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  • 815
12 votes
1 answer
2k views

What is the mechanism of eczema?

I'm trying to link the signs and symptoms of eczema (especially atopic dermatitis) to its causes. In short, what is the mechanism of the disease? In an answer of another question about eczema, @...
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  • 967
12 votes
1 answer
494 views

Can Neem Leaves be taken directly (Azadirachta indica, Nimtree)

Nimtree is really precious when it comes to skin hygiene. It also has other vital health benefits. Is it alright to take the Nimtree leaves directly? As I heard from a friend that it is harmful to ...
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  • 221
11 votes
1 answer
457 views

Is constantly using oily moisturizer bad for your skin?

I have eczema and as a result I have to use moisturizer to reduce the dryness. I heard that coconut oil is pretty good. I tried it and indeed it helped. But I was told that I shouldn't use it ...
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  • 967
11 votes
1 answer
471 views

Does CO2 laser treatment work well with acne scars?

Several dermatologists says that CO2 laser treatment is still the best solution for acne scars. Does CO2 laser treatment provide a smooth skin or just mitigate these scars? What are the side effects ...
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10 votes
2 answers
419 views

Is it possible to reverse the skin cell damage caused by sunlight by taking appropriate vitamins?

Of course it is said that vitamins C and E are good for skin, but I would like to know if it is actually possible to reverse any of the skin cell damage i.e. sunburn, skin aging, melanoma caused by ...
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10 votes
1 answer
237 views

Is UV light necessary for vitamin D generation?

As far as I know, glass blocks UV light, which is cancerous. Do we generate vitamin D behind a glass window, if we sit in the sun?
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  • 457
10 votes
1 answer
170 views

If I think my mole is changing, what should I do?

If I think a mole has changed, or my partner thinks they have noticed a change, what should I do about it? Is there any way of finding out for sure if a mole has changed?
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10 votes
2 answers
260 views

Are there proven natural treatments to kill acne-causing bacteria?

I ask about natural options that specifically kill bacteria in acne. These options should be interchangeable with conventional antibiotics. Medicine such as topical retinoids don't answer this ...
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9 votes
2 answers
121 views

Any benefits (or harms) for hair removal (beyond possible aesthetic reasons)?

I hear a lot about hair removal (anything and everything) and its possible benefits, particularly in terms of sweating and odor control. However, I also hear people suggesting that hair removal (...
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  • 333
9 votes
1 answer
1k views

Anodized aluminum, skin contact, and health risks

Are there any health risks from wearing a watch made of anodized aluminum? Will aluminum get into the body through the skin?
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7 votes
1 answer
107 views

Is there a complete cure for Limited Scleroderma?

One of my cousins is diagnosed with Limited Scleroderma. Is there a complete cure for it? If not, are there any suggestions on reducing the pain and lead a normal day-to-day life? A wide range of ...
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  • 533
7 votes
1 answer
423 views

Wearing a corset

First of all, I am not an english native speaker, however I will try to explain my issue as clear as possible. I am not asking for any diagnosis, but to clarify my question I will share my personal ...
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  • 137
7 votes
2 answers
211 views

Why do burn wounds benefit from cooling (beyond the first few seconds of actually lowering the temperature back to regular skin level)?

As in the title: why do burn wounds benefit from cooling (beyond the first few seconds of actually lowering the temperature back to regular skin level)? Advice for burn wounds always include cooling ...
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7 votes
1 answer
559 views

Why don't small wounds leave scars?

I am wondering, why do big, deep wounds leave scars and small ones do not?
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7 votes
1 answer
3k views

Is using SAStid soap good for eczema skin?

I have eczema, and after knowing that I'm addicted to steroid drug, I decide to withdraw it and have many symptoms after discontinue using steroids, including flaking skin, irritated, infected, or ...
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  • 967
7 votes
2 answers
142 views

How can you improve hair thickness from previous iron deficiency? [closed]

If you are suffering from hair loss from a iron deficiency, are taking an iron dietary supplement for a couple of months and used a topical lotion so the hair loss stopped how do you retrieve hair ...
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6 votes
1 answer
2k views

What is the word for the dead skin on the upper layer of a healed wound?

I aggressively cleaned my ear canal with my finger and the canal got scratched. After several weeks elapsed, it got naturally healed but I cannot hear clearly probably because of the dead skin left ...
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6 votes
2 answers
741 views

What is the process for removing moles (cancerous or non-cancerous) from skin?

Moles are underneath or in the deeper parts of the skin I believe. Do they use lasers or something? How do they prevent or try to prevent scarring?
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  • 4,896
6 votes
1 answer
3k views

Is petroleum jelly comedogenic?

I have done some research on this topic and there appears to be conflicting viewpoints. Some petroleum jelly products in stores state that it is non-comedogenic (it does not cause acne), while some ...
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  • 480
6 votes
1 answer
138 views

Why do herpes virus infections (apart from chicken pox) resolve without dermatological sequelae?

OK, first, needed research and a bunch of other articles. I've seen hundreds of cases of recurrent HV infections (labialis, zoster, etc.) uncomplicated by secondary infection, some of which looked ...
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6 votes
1 answer
94 views

Is it advisable to wear UV protected swimsuit that covers arms and legs for skin protection to an outdoor swimming pool?

Is it advisable to wear UV-protected swimsuit that covers arms and legs for skin protection to ward off skin cancer? Or is it too paranoid, given that most men and women wear swimming trunks / ...
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6 votes
1 answer
73 views

Aesthetics aside, is there a medical reason that acne should be treated?

There are obvious costmetic reasons to treat Acne. However, are there medical reasons for acne to be treated? Possible disadvantages of treatment include harshness of chemicals, side effects of ...
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  • 161
6 votes
1 answer
302 views

How can I treat calluses on my palms?

I've been going to the gym for about a year, and because I didn't wear gloves at first, I developed some calluses on my palms. They don't hurt much, but aesthetically, they aren't the most beautiful ...
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6 votes
2 answers
172 views

What causes some lacerations to form hypertrophic scars?

What feature of a skin injury (for example, depth of laceration?) determines whether scars will form as hypertrophic or not? For this question, I am differentiating hypertrophic from keloids, which ...
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  • 341
6 votes
1 answer
71 views

Why are retinoids applied only after washing the face?

Is there a reason behind washing your face before applying retinoids? I do not know why this is required. Of course, assuming you haven't done anything dirty (like sweat) during the day. This is ...
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  • 1,001
6 votes
0 answers
1k views

Why do I sometimes get itchy skin after taking a shower? [closed]

I live in a hard water area, and I sometimes get very itchy skin (typically on my arms and legs) that feels like having tiny pin-pricks, after taking a shower. It lasts for ten minutes or so, then ...
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  • 306
5 votes
3 answers
250 views

“There is a very strong correlation between consuming dairy products — such as milk — and acne, skin breakouts and aging.”

I read an article here that says: “There is a very strong correlation between consuming dairy products — such as milk — and acne, skin breakouts and aging.” The reason? Hormones, Bella says. ...
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  • 151
5 votes
1 answer
9k views

Does masturbation cause hair loss for men?

I started to notice my hair is thinning, and I searched on the internet for information to stop it or slow down the process. But I found a lot of websites and people claiming that masturbation is ...
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5 votes
1 answer
621 views

Fact or Myth, Will too much smile cause wrinkles?

I wonder many people say "If too much smile can be wrinkles on the face?" From some articles, I found some opinions that is the smile can be wrinkles on the face. But on the other hand is not it if ...
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  • 237
5 votes
2 answers
105 views

Can you prevent skin tags?

Skin tags, formally known as acrochordons, are small pieces of flesh that protrude from your skin. You’ll know it’s different from a wart or mole because of its pedestal base. Warts are flat on top ...
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  • 5,872
5 votes
2 answers
248 views

Why does dandruff shampoo loose effectiveness without shampoo alternation?

I've heard often 1 2 that alternation between anti-dandruff shampoos containing ketoconazole, zinc pyrithione, coal tar, selenium disulfide or salicylic acid is needed for the treatment to stay ...
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  • 989
5 votes
2 answers
20k views

Is early morning sunlight as good as evening sunlight for health?

There are several references which say that early morning sunlight would give the best benefits (like this and that). This comes from the common consensus that most of the harmful rays, at that time, ...
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5 votes
1 answer
138 views

Does taking Vitmain B-Complex with zinc through tablets really help in reversing hair fall

I am thinking of taking Vitmain B-Complex tablets. I am concerned about my overall metabolism and my prime concern is my hairs. Does it also help in treating premature grey hairs?
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5 votes
1 answer
224 views

Acne underneath skin [closed]

Introduction Okay, I've almost won my war. The battle, its almost won... However, I must still claim victory in my final battle. The battle against the little enemies, the ones that have fought with ...
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5 votes
1 answer
111 views

Can foods one is not allergic to exacarbate atopic dermatitis?

Several physicians (incl. two profesors in allergology, regarded among highest authorities in allergology in my country) told me and insisted that people with atopic dermatitis must avoid certain ...
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  • 763
5 votes
1 answer
110 views

Beyond correlation, why is Frank's sign significant or not?

The Wikipedia lists Frank's sign as Frank's sign is a diagonal crease in the ear lobe extending from the tragus across the lobule to the rear edge of the auricle. The sign is named after Sanders T. ...
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  • 6,747
4 votes
2 answers
19k views

Is it a good idea to use neosporin for opened blisters?

Is it a good idea to use neosporin for opened blisters? Example of opened blisters:
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4 votes
2 answers
66 views

Biochemistry of (tap water) iontophoresis?

I'm curious to know what science has to say about the biochemical processes of tap water iontophoresis. I was trying to find some insights from the mechanism of action to answer things like: Why does ...
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4 votes
1 answer
232 views

When applying Neospirin to a wound, why is it advised to apply only a thin layer of it?

I read on Neospirin's instructions that it is advised to apply only a thin layer of it. Why?
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4 votes
1 answer
11k views

Why don't gum abscesses heal on their own?

A gingival (gum) abscess is a pus filled pimple on the gum. I've read that they don't go away on their own and need to be drained by a dentist and cleaned before the wound can start to heal. From ...
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4 votes
1 answer
66 views

Can tacrolimus creme cause tacrolimus toxicity?

Tacrolimus is a medication given to patients who underwent organ transplantation. Increased serum level of tacrolimus may cause overdose symptoms. Apparently the normal tacrolimus serum level is ...
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  • 989
4 votes
1 answer
197 views

What causes "stretch marks" in skin?

I'm 15, which is young, but I've noticed I have horizontal stretch marks on the back of my legs and arms. They just started popping up. On the Mayo Clinic site, they are defined: Stretch marks (...
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4 votes
1 answer
120 views

Does the damage from sun exposure outweigh the benefit of getting vitamin D?

I have read some articles where they recommend a direct exposure to the sun of about 20 to 30 minutes, others say that 10 to 15 minutes, another that 5 minutes is enough, etc. I suppose it depends on ...
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  • 191
4 votes
2 answers
95 views

What Causes Stress Hives

I was looking up the effects of stress on skin on WebMD. It only talked about treatment and gave an very basic overview of one potential explanation, but not for the hives in particular. I just want ...
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