Skin, Dermatology FAQ - Page 44

Using tretinoin can cause darkening of the skin? I would like to ask about the argument regarding the darkening effect of retinoids (A acid). There are various opinions online, and I have seen some doctors explain that retinoids are not photosensitive but recommend applying them ...

How should multiple benign skin tumors/keratosis on the scrotum be treated? Hello, doctor. Which of the following treatments is quick and effective, and what are the potential side effects? Laser, cryotherapy, electrocautery, and superficial radiation therapy. What is minimally i...

Viral warts Dear Dr. Wu, I have developed viral warts on my face and neck. After undergoing cryotherapy about four days ago, I had been picking at them with my hands before the treatment, thinking they were just acne. During this period, if I cook or wash vegetables, is there a p...

Lipoma issues Director Wu developed a lipoma behind the earlobe many years ago, which was nearly resolved after outpatient treatment, but a very small scab remains. In recent years, another one has formed in the same location (approximately 1 cm). If left untreated, it accumulate...

Seborrheic dermatitis Hello, I have mild seborrheic dermatitis, which flared up after the temperature dropped, and I did not have a similar medical history before. The doctor prescribed Itraconazole capsules, one in the morning and one in the evening, to be taken continuously for...

Topical retinoic acid facial reactions Doctor, may I ask if it is normal to experience slight redness and a warm sensation after applying first-generation retinoids and azelaic acid on the face? Thank you.

Redness and itching of the foreskin? I would like to inquire about a situation where, after masturbation, the area around the foreskin became tight, very red, and extremely itchy. It now appears rough and wrinkled, with some peeling, but the glans is unaffected, and there is no d...

After discontinuing oral isotretinoin? Hello Doctor, I started taking isotretinoin in January of the year before last as part of a treatment regimen. However, my skin became excessively dry, so my doctor advised me to take 10 mg every other day instead. Last August, I went to Gre...

A newly developed black mole? If a new black mole has appeared on the foreskin and it feels similar to a pimple when touched during bathing, should I see a dermatologist for examination? Thank you.

The back of the right hand and wrist are dry and itchy? Hello Doctor, my right hand and wrist start to itch and become dry and cracked every winter (when the temperature drops). I have a history of allergies and have been taking antihistamines for over 15 years. The main symptoms...

Post-treatment medications for cauliflower? Previously, the cryotherapy for the anal area was not effective due to inflammation. After waiting for the inflammation to subside, I switched to topical medication, using Wart Remover for three days followed by four days of rest. By th...

Shampoo issues? I have been consistently using Helen Freshness, but after a while, I noticed a significant increase in dandruff two days after using it. I then tried Ren Shan Li Shu, but it didn't help with the dandruff either. After that, I used Rou Bei Si, which improved t...

Laser mole removal Hello Doctor, I have a mole on my face. Two weeks ago, I had it removed with laser treatment, but the doctor told me that it was a round mole, so I would need to undergo laser treatment twice. During my follow-up visit today, he mentioned that the mole might re...

Skin issues around the glans and urethral opening? Hello Doctor, six months ago I underwent a circumcision due to phimosis, and the surgical wound healed normally. However, I am currently experiencing a troubling issue. When I take off my underwear, sometimes the urethral opening...

Burn blister wound Hello, due to the pandemic, it is not very convenient to visit the hospital for a consultation. I would like to ask some questions regarding a wound. I had a burn on my calf that developed blisters, and recently I accidentally burst one of them. Initially, I on...

Pregnancy-related acne? I am currently 8 weeks pregnant, and since the beginning of my pregnancy, I have been experiencing a severe outbreak of acne and pimples on my face, neck, chest, and back, which has also left many acne scars. The situation is quite distressing. Are there a...

Localized fissures on the hands with hyperkeratosis may present with mild swelling? There is a condition of peeling, thick white skin with cracking located on the fingertip of the right thumb above the first phalanx and above the second phalanx of the index finger, which has pers...

Skin issues - dark spots? I have small black spots all over the back of my hands, elbows, and arms (only on the outer side, not on the inner side). The spots are not very dark and each one is quite small, but they are very dense and almost appear to be connected. They look somewh...

Can alpha hydroxy acids (AHAs) eliminate acne scars? About a year ago, I developed some acne that left behind some pitted scars. They have faded a bit since then, but are still noticeable. Occasionally, I still get small pimples. I would like to know if using a 30% combination of...

Severe acne breakout? Two years ago, after finishing a course of isotretinoin, my skin was in excellent condition for nearly a year. At that time, I only needed to apply a moisturizing lotion, and everything was perfect. However, after stopping the medication, I started experienc...