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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-4 votes
0 answers
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black patches and protrusions on skin with a lot of itching [closed]

[![][1]][1] black patches and protrusions on skin with a lot of itching kindly diagnosis this problem please. [1]: https://i.stack.imgur.com/q0epY.jpg
0 votes
0 answers
49 views

What is the dose-dependence of cigarette smoking and skin damage?

I am aware that the number of cigarettes smoked does not scale linearly with risk to cardiovascular and lung health, with even occasional smoking significantly increasing risk (Schane et al., 2010. ...
1 vote
0 answers
70 views

Can the umbilicus evert without an underlying umbilical hernia?

Can the skin of the umbilicus detach from the abdominal wall (perhaps with trauma but without breakage of the skin) and will the umbilicus pop out if this happens? I've tried looking for examples of ...
1 vote
1 answer
98 views

How do particular skin layers show (de)hydration characteristics?

On the subject of health tracking and biosensors, in particular optical sensors such as blood pressure, optical sensor and blood oxygen level. Would an optical sensor theoretically be able to ...
5 votes
0 answers
118 views

How do dermatologists make a differential Diagnosis between Psoriasis, Parapsoriasis and Skin Lymphoma in an otherwise healthy person?

It seems to me, from the following Google Images search, that the dermatological symptoms for Psoriasis, Parapsoriasis and Skin Lymphoma are quite similar, excluding a certain type of Psoriasis named ...
3 votes
0 answers
69 views

Electromagnetic Light and Radio Pulses in Combination against Skin Conditions

Reading up on recent developments in the treatments for Hidradenitis suppurativa I came across a brand new option. Τhat option, if true, would by absolutely sensational on several fronts: The so ...
1 vote
1 answer
2k 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 ...
1 vote
0 answers
46 views

How do doctors learn to spot cancer in moles?

It is very clear to me that doctors do not use the ABCDE rule to check a mole for skin cancer, as I probably have 30-40 moles that clearly violate one or more of these rules, yet the doctor always ...
1 vote
1 answer
198 views

Does milk tea cause darkening of the skin?

Will having milk tea more than three times in a day cause darkening of the skin.
3 votes
1 answer
75 views

What diseases could be transmitted skin to skin (massage)?

What kind of diseases one can get from a skin-to-skin interaction such as getting full body massages (without touching intimate parts) assuming a person had mild skin damages that occur after shaving ...
1 vote
0 answers
37 views

How does immunity against HPV work?

Premises: The HPV vaccine(s) protect against infection with several HPV strains (the number depending on the exact vaccine), but don't cure existing infections. HPV is not a blood-borne disease, i.e. ...
1 vote
2 answers
144 views

Does skin picking cause skin cancer?

I was a skin picker (Dermatillomaniac) since several years ago. Of course I pick only the skin of my hand thumbs. I wish to quit it and I wish to know about two things here: Does chronic skin picking ...
0 votes
0 answers
25 views

Pathologies that can lead to bleeding and cracked skin

What skin condition or pathology might be depicted in the current image? Suggestions would be helpful as they would allow more closer follow-up investigation at a local dermatologist.
3 votes
0 answers
30 views

What exactly causes dry skin to itch?

I know that dry skin can itch (since I'm almost sure I have it), but why? I don't really know anything about dermatology (or medicine generally) so the best hypothesis I can come up with is that ...
2 votes
0 answers
58 views

What is the weakest steroid in systemic usage?

I understand that there are several steroids given as a systemic treatment in various doses and at various day times (morning or evening) adjusted by patient situation(1). For example: Prednisone ...
7 votes
1 answer
76 views

What does current research show regarding the use of sunscreen in deeper skin tones?

I've struggled to find anything at all in the literature that specifically investigates the use of sunscreen as a preventative measure against sun damage in people with deeper skin tones. Furthermore, ...
0 votes
0 answers
95 views

Can fasting-induced autophagy impact vitiligo progression?

I recently came across a study titled "A Protective Role for Autophagy in Vitiligo" published in 2012, which is quite intriguing (source). However, the level of detail and technicality of ...
2 votes
0 answers
33 views

Is there a correlation between a vegan diet low in Vitamin B12 and the occurrence or severity of vitiligo?

Studies have shown a significant reduction of Vitamin B12 levels in individuals with vitiligo. This meta-analysis provides an overview: https://pubmed.ncbi.nlm.nih.gov/30165163/ Results: Twenty-two ...
4 votes
0 answers
479 views

What are more effective alternatives to Biafine and Epitheliale AH? [closed]

My friend has an extreme form of vitiligo so she has developed an extreme sensitivity to sun light and gets sunburns quickly. She uses Biafine often and also Epitheliale AH. What are more effective ...
2 votes
0 answers
116 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 and studied as such, like in this study. The non-pigmented ...
5 votes
0 answers
55 views

Does any mechanism of action exist that would allow topical application of jojoba oil to down-regulate sebum production?

This study found that adapalene (brand name Differin) suppresses "TG and PLIN1 production in differentiated hamster sebocytes" leading to the stated goal of "an inhibitory action for ...
2 votes
1 answer
6k views

In what order should ointment and lotion be applied?

I apply both moisturizing cream and a medicinal ointment/lotion on some recovering injuries. The skin is unbroken, and the medicinal lotion is primarily for the entry point of a titanium rod in my ...
1 vote
0 answers
51 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, ...
1 vote
0 answers
27 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 ...
3 votes
1 answer
67 views

Patches of Partial Albinism

In this site: https://www.myvitiligoteam.com/resources/albinism-vs-vitiligo-whats-the-difference, at the header "Partial Albinism vs. Vitiligo" it says that Partial Albinism(which I think is ...
-3 votes
1 answer
53 views

A vitamin supplement can be both water and fat soluble? [closed]

How can these nutritional facts included supplement can be defined? Water-soluble or fat-soluble?
3 votes
1 answer
83 views

Where, in the human skin, would lidocaine cream stop but lidocaine injections won't?

In some medical procedures lidocaine is injected and in some others it is topically administered as a cream. Histologically speaking, where, in the human skin, would lidocaine cream stop but lidocaine ...
6 votes
1 answer
142 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 ...
5 votes
3 answers
272 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. ...
3 votes
1 answer
186 views

How do clinicians prevent haloperidol-induced seborrheic dermatitis?

I understand that seborrheic dermatitis is a possible side effect of haloperidol, an old, widely used, typical anti psychotic drug. Assuming that this reported side effect is real and not a mistake, ...
1 vote
1 answer
143 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 ...
0 votes
1 answer
95 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: ...
1 vote
0 answers
35 views

What's optimal from a cosmesis standpoint between applying a single or a double freeze-thaw cycle to treat a thick seborrhoeic keratosis?

I'm reading contradictory statements. {2} states: Two freeze/thaw cycles (with a shorter freeze time) are more effective for thicker lesions such as seborrhoeic keratosis and warts. However, {3} ...
2 votes
0 answers
28 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 ...
2 votes
1 answer
85 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 ...
1 vote
0 answers
26 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. {...
2 votes
0 answers
32 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 ...
3 votes
0 answers
35 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 ...
3 votes
0 answers
28 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 ...
0 votes
0 answers
20 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 ...
0 votes
1 answer
80 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 ...
2 votes
1 answer
37 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 ...
3 votes
0 answers
34 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 ...
1 vote
1 answer
125 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 ...
5 votes
1 answer
133 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 ...
0 votes
1 answer
83 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) ...
2 votes
2 answers
2k views

Can skin creases caused by obesity or exacerbated by poor posture be corrected?

Deep skin creases in people with obesity are common. When weight loss occurs, skin folds are reduced but the creases remain. The same seems to be true of creases deepened by poor posture. What can be ...
0 votes
1 answer
97 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 ...
3 votes
0 answers
130 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 ...
3 votes
1 answer
153 views

How can 5% and 10% concentrations of benzoyl peroxide, be less effective than the 2.5%?

Herbert P. Goodheart, MD 1971 (Hahnemann Medical College). Acne For Dummies (2006). p. 234. Benzoyl peroxide is the most commonly used over-the-counter acne medication, and is also the most ...

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