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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6 views

To prescribe one medicated shampoo(once in 7/15 days) and a mild shampoo(once/twice a week) alternately to treat dandruff and seborrheic dermatitis?

Patients with excess sebum production on scalp, then dandruff following pimples has no permanent solution mostly. In such cases, doctors suggests some anti-fungal shampoo like ketoconazole, sebowash, ...
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16 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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15 views

Why does taking Biotin+Collagen tablets fix my erectile dysfunction and peeling of cuticle skin problems but worsen my hemorrhoids? [closed]

The pills that I take has 833.34 mg of hydrolyzed collagen and 1666.67 mcg of biotin per tablet. I'm taking one everyday (or even every other day) and I have the same symptoms. The first two side ...
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1answer
192 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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1answer
44 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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1answer
58 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
83 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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1answer
55 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
50 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
56 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
77 views

Can the use of hydrogen peroxide in dentistry worsen the oxidative stress in patches of facial vitiligo vulgaris?

According to this study 1, hydrogen peroxide is not absorbed by the skin, but can cause systemic toxicity when inhaled or ingested. I am not entirely sure how often hydrogen peroxide is inhaled or ...
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15 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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14 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
19 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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1answer
62 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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1answer
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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48 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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45 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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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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7 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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20 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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11 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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0answers
8 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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17 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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2answers
979 views

Is combining silicone plasters and silicone gels for scars effective?

I have a question. As far as I know, silicone gels and silicone plasters (aka sheets or patches) are used to optimize wound healing and minimize scarring. I purchased a silicone plaster Mepiform and ...
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13 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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17 views

What is the basal cell carcinoma subtype cooccurrence matrix? (I.e., given BCC subtype A, what's the likelihood of also having BCC subtype B)

In many basal cell carcinomas (BCC), the histology shows that they coexist more than one BCC subtype. For example, a patient may have 1 skin lesion that is diagnosed as BCC of subtypes superficial+...
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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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22 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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1answer
80 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 ...
0
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0answers
18 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
26 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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14 views

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

I read on https://emedicine.medscape.com/article/276624-workup#c8 (mirror): Superficial basal cell carcinoma: Approximately 10-15% of all BCCs are of this type. This is the most common pattern seen ...
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44 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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20 views

Why is superficial basal cell carcinoma (BCC) the most common pattern seen in BCCs of the shoulder?

I read on https://www.medscape.com/answers/276624-100162/which-histologic-findings-are-characteristic-of-superficial-basal-cell-carcinoma (mirror): Approximately 10-15% of all BCCs are of this type [...
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1answer
65 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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0answers
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 ...
1
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1answer
681 views

Do synthetic fabrics pose a health risk?

Background I've seen a large number of health blogs that describe Polyester, Rayon, Acrylic, and Nylon, as harmful or toxic (usually due to chemicals used during the manufacturing process). Some ...
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25 views

Why is Imiquimod 5% cream used to treat a superficial basal cell carcinoma less effective on lower limbs than the rest of the body?

I read on https://bpac.org.nz/2017/skin-cancer.aspx (mirror): It is less effective when used on lower limbs and generally impractical for the posterior trunk due to inaccessibility. Why is Imiquimod ...
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0answers
21 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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37 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 ...
0
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0answers
54 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
78 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 ...
2
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2answers
560 views

Questions about the use of Vitamin-E to prevent scar formation after blood donation

I am told that applying Vitamin-E before donating blood prevents permanent scar formation. But won't it's effect be nullified when the Phlebotomist applies the disinfectant before drawing my blood? Is ...
3
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0answers
70 views

Is vitiligo inherited from one generation to a later one?

There seem to be many testimonies on the internet that suggest that vitiligo is heritable 1. According to a Quora answer 2, there is apparently a 5% chance of transferring vitiligo to your kids. Yet, ...
3
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0answers
29 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 ...
4
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1answer
98 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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0answers
24 views

How do melanin or pigment related genetics from Vitiligo patients compare to or differ from Albinism patients?

The definition of Albinism is: Albinism is a congenital disorder characterized in humans by the complete or partial absence of pigment in the skin, hair and eyes. 1 The definition of Vitiligo is: ...
4
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1answer
59 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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0answers
85 views

How does tacrolimus affect vitiligo-affected skin and hair (re)pigmentation?

While tacrolimus (Protopic) creme was not created with the purpose to treat vitiligo, it is prescribed by dermatologists for that purpose. The non-pigmented hairs in vitiligo affected skin treated ...

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