Questions tagged [dermatology]

Questions about diseases or disorders of the skin fall under the general tag "dermatology", which is the branch of medicine dealing with the skin. This includes the skin's structure and function as well as any disorders or diseases. It also deals with structures generated in/by the skin, e.g. sweat, oils/sebum, hair, nails, moles, warts, skin coloration and its disorders, etc.

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27 views

Will benzoyl peroxide (10%) fade a tattoo once the tattoo is healed? [closed]

I have been using a 10% benzoyl peroxide wash daily for the past 5 years on my chest and back. Recently, I have been wanting to get a tattoo in an area I use benzoyl peroxide, but I am concerned that ...
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18 views

Does ingesting itraconazole pills increase the likelihood of success for a topical cream (Imiquimod/5-Fluorouracil) to treat BCC?

The 2014 phase II trial {1} indicates that oral itraconazole is beneficial for the treatment of basal cell carcinoma (BCC). Imiquimod 5% cream and topical 5-Fluorouracil (5-FU) have also been used to ...
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21 views

Why are some areas of the face more likely to have basal cell carcinoma (BCC) recurrences than others?

BCC = basal cell carcinoma. I read on {4}: Certain clinical and pathological features of BCC are associated with an elevated risk for recurrence after treatment. Recurrent BCC may reappear months to ...
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12 views

How accurate is reflectance confocal microscopy (RCM) to predict whether a basal cell carcinoma (BCC) is infiltrative or superficial?

Reflectance confocal microscopy (RCM) is a noninvasive imaging technique that has been used to diagnose basal cell carcinoma (BCC). How accurate is RCM to predict whether a BCC is infiltrative or ...
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1answer
28 views

Is it true that freckles have zero potential for malignant transformation?

This New York City dermatologist called Dr. Bobby Buca on this web page says: "Freckles and moles have two things in common: there is a genetic tendency to get them, and both are darker than the ...
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32 views

Probability to develop a new type of melanoma

I saw that there are different types of melanoma: some are more aggressive and others are less dangerous. From what I understood searching on web, the causes of melanoma are not clear but there are ...
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1answer
115 views

Is there a method to distinguish nail from skin, for example examination under a microscope?

Is it possible to distinguish parts of toenail from skin, for example under a microscope? Say I had a hypothesis that some toenail material had wound its way down the toe and spread out under the sole ...
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20 views

What percentage of facial basal cell carcinomas (BCC) are superficial or infiltrative?

I read here (mirror): Superficial basal cell carcinoma: Approximately 10-15% of all BCCs are of this type. This is the most common pattern seen in BCCs of the shoulder. The solid (nodular) type ...
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1answer
55 views

Why do shave biopsies and punch biopsies used to diagnose suspected facial basal cell carcinomas measure a few mm instead of being below 1mm?

Given a neoplasm of uncertain behavior of skin on a patient's face that is suspected to be a basal cell carcinoma (BCC), the typical first step is to perform a shave biopsy to determine the type of ...
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1answer
61 views

Why isn't imiquimod cream used prior to performing a biopsy used for suspected facial basal cell carcinomas?

Given a neoplasm of uncertain behavior of skin on a patient's face that is suspected to be a basal cell carcinoma (BCC), the typical first step is to perform a shave biopsy to determine the type of ...
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1answer
44 views

Does any drug/cream help prevent DNA damage post UV exposure?

I read on https://medicine.yale.edu/news-article/sun-damage-occurs-even-after-sunset/: When UV light hits the skin , it causes a type of DNA damage known as a cyclobutanepyrimidinedimer (CPD) , in ...
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24 views

Dermapen scar removal

Is Dermapen treatment really works on scars? I saw this Image in online . I have a doubt about is this really improve scar disappearing.
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What is the tratment with less side effects for generalised hyperhidrosis?

Treatment options for generalised primary hyperhidrosis Seems like all the treatments have some kind of risk, and i`m thinking i should start with the most secure treatment. I have an appointment with ...
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30 views

To what extent do UV-A, UV-B and UV-C exposure account for visible signs of aging in the skin? I'm looking for a breakdown between UV-A, UV-B and UV-C

Several studies indicate that UV exposure account for between 80% to 90% of visible signs of aging in the skin. E.g., from {1}: UV exposure may account for up to 80% of visible signs of aging in the ...
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19 views

Is there any known correlation between stomach worms and fungal skin infections?

Is there any literature which points to correlation between worm infestation of the intestines and fungal infection of the skin? The possible mechanism being the stomach worms disrupting natural ...
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16 views

Studies in which supplements help with skin hydration and elasticity for eczema or dermatitis

I've found in this article that 3g/d of collagen tripeptide for 4 to 12 weeks notably improved skin elasticity and hydration. I wanted to know of studies that show similar benefits for other ...
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1answer
20 views

For how long does the application of topical retinoids increase photosensitivity?

I read on https://www.medscape.com/viewarticle/726464_6: Owing to potential photosensitivity, topical retinoids are best applied at night and patients should not expose themselves to excessive UV ...
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55 views

What is the meaning of a broken skin? How broken it has to be for rabies virus to go inside human body?

So, I have this doubt. I searched the internet and everywhere they mention that rabies can't go through unbroken skin but nowhere they explain what broken skin means? When I scratch myself because of ...
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24 views

Is there a standard between dermatologists not to inject numbing agents before laser treatments?

physicians often apply topical numbing agents (local anesthetics) such as Lidocaine+Prilocaine or Benzocaine+Lidocaine+Tetracaine (BLT) as a cream/ointment about 30 minutes before laser treatments. I ...
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1answer
105 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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8 views

What's the success rate of Imiquimod Cream 5% recommended for the treatment of facial superficial basal cell carcinoma beyond 5 years post-treatment?

I have read several studies on the success rate of Imiquimod Cream 5% for the treatment of facial superficial basal cell carcinoma, however none of them looked at beyond 5 years post-treatment. E.g. {...
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25 views

How to treat blisters on burnt skin after initial period?

In google, there are plenty of articles about what to do (i.e. First Aid) when you get skin-burn (doing this or that...etc..). However, I was unable to find any solid article that refer to treating of ...
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14 views

What is the difference in cosmesis of the treatment of a seborrheic keratosis between cryotherapy and electrodesiccation?

There exist different treatments to remove a seborrheic keratosis (SK), such as cryotherapy and electrodesiccation {1}. I wonder what the difference in cosmesis of the treatment of a seborrheic ...
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11 views

Does combining silicone gel therapy and pressure therapy help scar reduction (vs. using just one of these therapies)?

The 2015 review {1} mentions different therapies for scar reduction, including: Treatment Description Advantages Disadvantages Pressure therapy Application of elastic bandages or pressure garments ...
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18 views

Does alternating silicone sheets with silicone gel yield a better scar reduction than using silicone sheets or silicone gel alone?

ScarAway's packaging mentions (ScarAway is one of the main brands for silicone gels and silicone sheets in the United States): For best results: Use as part of a complete scar treatment regimen, ...
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1answer
54 views

What is the difference in cosmesis of the treatment of a seborrheic keratosis between cryotherapy and curettage?

There exist different treatments to remove a seborrheic keratosis, such as cryotherapy and curettage+electrodesiccation {2,3}. I wonder what the difference in cosmesis of the treatment of a seborrheic ...
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23 views

Why may a small basal cell carcinoma (BCC) treated with radiation be much more aggressive than it appears on the surface?

I read on https://www.skincancer.org/blog/ask-the-expert-why-am-i-having-surgery-to-remove-a-small-basal-cell-carcinoma/ (mirror): In addition, a small BCC in an area previously treated with ...
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1answer
59 views

Do 50% of individuals with a history of BCC will develop another one within 5 years of diagnosis regardless of the age of the individual?

https://skinio.com/education/basal-cell-carcinoma/ (mirror) says: Patients diagnosed with BCC should be examined by their dermatologist at least twice a year. Remember, 50% of individuals with a ...
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1answer
27 views

How accurate is dermoscopy to predict if a skin lesion is a basal cell carcinoma (BCC), and if it is, whether it is superficial or aggressive form? [closed]

https://dermnetnz.org/cme/dermoscopy-course/dermoscopy-of-basal-cell-carcinoma/ mentions that one can use dermoscopy to diagnose basal cell carcinoma (BCC) and their subtype (nodular, superficial, etc....
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45 views

Why isn't Imiquimod Cream 5% recommended for the treatment of superficial basal cell carcinoma located on the face?

I read on Approval Package for Imiquimod Cream, 5% on February 25, 2010 (mirror): Reference Drug (NDA number): Aldara® (imiquimod) 5% Cream (NDA 20-723), Graceway Pharmaceuticals. Date of approval: 2/...
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25 views

How effective is topical fluorouracil to treat facial superficial basal cell carcinoma (BCC) after Imiquimod 5% cream failed to treat it?

Both Imiquimod 5% cream and topical 5-Fluorouracil (5-FU) have been used to treat basal cell carcinoma (BCC) with a fair amount of success (~60 to 90% success rate at 5-year follow-up) {1}. Imiquimod ...
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1answer
87 views

Which criteria are used to choose whether to perform a shave biopsy or a punch biopsy to diagnose suspected facial basal cell carcinomas?

Given a neoplasm of uncertain behavior of skin on a patient's face that is suspected to be a basal cell carcinoma (BCC), the typical first step is to perform a shave biopsy to determine the type of ...
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0answers
25 views

Should Imiquimod 5% cream be applied 1 cm beyond the target tumor when treating a facial basal cell carcinoma, and if so, why?

I read on https://www.accessdata.fda.gov/drugsatfda_docs/label/2004/20723s016lbl.pdf (mirror): 364 patients with primary superficial basal cell carcinoma (sBCC) were treated with Aldara Cream or ...
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1answer
77 views

What is the success rate of topical imiquimod 5% cream to treat infiltrative basal cell carcinoma (BCC)?

What is the success rate of topical imiquimod 5% cream (US brand: Aldara) to treat infiltrative basal cell carcinoma (BCC)? So far I've only found some case study {1} and some study on using topical ...
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1answer
74 views

Is Imiquimod 5% cream (US brand: Aldara) helpful as an adjunctive treatment of a facial basal cell carcinoma (BCC) prior to a Mohs surgery?

I wonder whether Imiquimod 5% cream (US brand: Aldara) is not helpful as an adjunctive treatment of a facial basal cell carcinoma (BCC) prior to a Mohs surgery. Helpful in this context means 1) ...
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1answer
62 views

How frequently does the use of topical fluorouracil cream result in permanent scarring and/or skin discoloration?

I wonder how frequently the use of topical fluorouracil cream results in permanent scarring and/or skin discoloration (e.g., hyper- or hypopigmentation). What I have found so far doesn't give any ...
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1answer
64 views

How effective is topical fluorouracil to treat facial superficial basal cell carcinoma (BCC)?

I wonder how effective topical fluorouracil is to treat facial superficial basal cell carcinoma (BCC). What I have found so far doesn't give any source supporting their claims or I cannot access them: ...
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1answer
110 views

How frequently does the use of topical imiquimod result in permanent scarring and/or skin discoloration?

I wonder how frequently the use of topical imiquimod cream results in permanent scarring and/or skin discoloration (e.g., hyper- or hypopigmentation). What I have found so far doesn't give any source ...
1
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1answer
87 views

Why isn't fine needle aspiration (FNA) biopsy used to diagnose suspected facial basal cell carcinomas?

Given a neoplasm of uncertain behavior of skin on a patient's face that is suspected to be a basal cell carcinoma, the typical first step is to do a shave biopsy to determine the type of basal cell ...
3
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41 views

What is the reason for pink discoloration in pink disease or acrodynia

Pink disease or acrodynia is a reaction to large doses of amalgam. It is an uncommon mercurial toxicity reaction in which skin is involved. According toWikipedia: Acrodynia is a condition of pain and ...
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1answer
110 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 ...
2
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46 views

Endoderm And Ectoderm

According to Wikipwdia: Ectoderm is one of the three primary germ layers in the very early embryo. The other two layers are the mesoderm (middle layer) and endoderm (most proximal layer), with the ...
3
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0answers
118 views

Seboorrheic Dermatitis, Fungi, Environmental Factors

How can seborrheic dermatitis not be caused by poor hygiene as the assotiation for dermatology said? Wouldn't poor hygiene at least aggravate the condition? The treatment is mainly antifungal. And ...
2
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1answer
61 views

What kind of health effects do beards have, if any?

Do having beards have any health effects? I suppose it depends on the type and the hygiene of the beard, e.g., having a very long, dirty beard might create a suitable environment for bacterias to ...
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2answers
303 views

Are soap-free cleansers effective against COVID-19

It is recommended to regularly wash hands with soap to slow the spread of COVID-19. However regularly washing with soap can be harmful to the skin. Soap-free cleansers such as QV Wash are frequently ...
3
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1answer
124 views

How deep into the skin do topical acne medications penetrate?

Given a topical gel that is a mixture of dapsone (6%), an antibiotic spironolactone (5%), an androgen blocker niacinamide (2%), a form of Vitamin B3 and skin brightener How deep into the skin do ...
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50 views

Are there a plastic surgery conditions of a "double chin" or "triple chin"?

Executing Is there a plastic surgery condition of a "double" or "triple" chin? as a search query in three search engines (Google, Bing, DuckDuckGo) and looking at images brought me almost no results ...
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43 views

How dangerous for the human skin are naturally occurring wavelengths above 380nm?

I read on https://www.cancer.org/cancer/cancer-causes/radiation-exposure/uv-radiation.html: UVA rays have the least energy among UV rays. These rays can cause skin cells to age and can cause some ...
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0answers
26 views

Difference between medical and general dermatology [closed]

So I am looking at the different clinical interests of dermatologists on the clinic's website. One provider lists their clinical interests as general dermatology and medical dermatology. I'm ...
2
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1answer
43 views

Is there any evidence for any positive effects on body functions by alkaline spas?

When a friend asked me what she could expect from alkaline bathings, did I know of any evidence. A quick research also did not reveal meaningful data. From what I know there should be absolutely no ...

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