Understanding Melanocytes: Do They Exist Everywhere on Our Skin?
Confusing questions? Hello, doctor. Do melanocytes exist throughout the body? An online article mentioned that the palms and soles do not have melanocytes, which is why moles do not form there. However, I have observed many people with moles on their palms and soles, as well as n...
Dr. Li Yufen Reply:
Hello: The skin on the palms and soles also contains melanocytes. In individuals of Asian descent, malignant melanoma is more likely to occur on the hands and feet. To prevent the development of moles or spots, supplementing with vitamin C for its antioxidant properties may provi...[Read More] Understanding Melanocytes: Do They Exist Everywhere on Our Skin?
Can Long-Term Antibiotic Use for Acne Be Safe and Effective?
Antibiotics for acne? Hello, can I continue taking oral antibiotics after stabilizing facial acne? This is to prevent a recurrence after stopping the medication. If I continue taking them, will it cause significant harm to the body? Thank you.
Dr. Li Yufen Reply:
Hello: Generally, after a period of stability with oral antibiotics for acne, treatment will shift to topical medications for control, and long-term use of antibiotics is not recommended. Regarding the side effects of the commonly used oral antibiotic Doxycycline for acne, you ca...[Read More] Can Long-Term Antibiotic Use for Acne Be Safe and Effective?
When to Schedule Your Second Cryotherapy Appointment: A Guide
When is the approximate time for the second follow-up visit after cryotherapy? Doctor, I had my first cryotherapy treatment on Tuesday, and I have developed blisters on my palms. The more severe area has a large blood blister. Should I return for my second follow-up appointment i...
Dr. Li Yufen Reply:
Hello: If the blister is large and causing discomfort, you can return for an earlier appointment to have it drained. If there is no discomfort, you can wait until the blister subsides and the dead skin falls off before returning for a follow-up. Thank you![Read More] When to Schedule Your Second Cryotherapy Appointment: A Guide
Itchy and Red Bumps in the Pubic Area: Causes and Solutions
Itching and redness in the pubic area? Hello, doctor! Since yesterday afternoon, I've been experiencing itching in the pubic area, but after taking a shower in the evening, the itching stopped. The next morning, I noticed that the pubic area appeared as shown in the linked i...
Dr. Li Yufen Reply:
Hello: Based on the photo, it is possible that the condition is tinea cruris caused by a fungal skin infection. However, due to the low resolution of the online photo, I recommend consulting a nearby dermatologist for diagnosis and treatment. Thank you![Read More] Itchy and Red Bumps in the Pubic Area: Causes and Solutions
Should Chronic Urticaria Patients Visit Hospitals or Clinics?
Do I need to go to the hospital for chronic urticaria, or is it sufficient to visit a clinic? As a chronic urticaria patient, I find that my clinic doctor can only prescribe medication for six days at a time. This means I have to visit the doctor every week to get the same medica...
Dr. Li Yufen Reply:
Hello: If you have chronic urticaria and your medication is stable, you can go to the hospital to obtain a longer supply of oral medication. Thank you![Read More] Should Chronic Urticaria Patients Visit Hospitals or Clinics?
Managing Excessive Foot Skin Shedding in Seniors: Tips and Solutions
Foot skin issues? Hello Doctor: I have a question on behalf of my grandfather (68 years old). He experiences excessive shedding of skin from his feet every day, leaving a lot of skin flakes on the bed. He does not rub his feet, yet the skin continues to fall off naturally. Every ...
Dr. Li Yufen Reply:
Hello: The two online photos only show the peeling skin on the feet, and do not provide information about the condition of the skin itself, making it difficult to determine the possible causes. If it is a peeling type of athlete's foot, treatment with antifungal ointment is ...[Read More] Managing Excessive Foot Skin Shedding in Seniors: Tips and Solutions
Which Acidic Body Lotion is Best for Keratosis: Salicylic vs. Glycolic?
Which type of acidic body lotion is more suitable for individuals with keratosis? Recently, I've seen many body lotions containing acids, such as 2% salicylic acid body lotion and 10% alpha hydroxy acid (AHA) body lotion. Which one is more suitable for keratosis?
Dr. Wu Yuxin Reply:
Both options are actually available, and consumers can choose for themselves.[Read More] Which Acidic Body Lotion is Best for Keratosis: Salicylic vs. Glycolic?
Red, Itchy Neck with Burning Sensation: Possible Skin Reaction?
Redness in the neck with a burning and stinging sensation? On Wednesday, I tested positive on a rapid test and started isolation, so I picked up my medication around noon on Thursday (the doctor prescribed general cough and cold medications, not antiviral drugs). In the evening, ...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is difficult to make a definitive diagnosis. If it is inconvenient to seek medical attention due to a confirmed diagnosis, a telemedicine consultation can be utilized.[Read More] Red, Itchy Neck with Burning Sensation: Possible Skin Reaction?
Understanding Drug Interactions: Oral A Acid and Anxiety Medications
Drug interactions Hello, I have reviewed most of the questions regarding oral isotretinoin on the forum, but there are still some things I'm unclear about. 1. I currently have oral isotretinoin 20mg, and my doctor suggested taking it every other day. However, I have recent...
Dr. Wu Yuxin Reply:
1. Please consult the pharmacy department regarding this issue. 2. In principle, it is possible, but it still requires a consultation with a physician.[Read More] Understanding Drug Interactions: Oral A Acid and Anxiety Medications
Understanding Frostbite: When to See a Dermatologist for Finger Injuries
Frostbite from touching a frozen pipe in the freezer? I touched a cold ice pipe (similar to a warming rod) in the freezer at 7-Eleven, and my little finger immediately felt frostbite-like. It's been 5 to 6 days, and my finger still feels numb. There is some discomfort, but t...
Dr. Wu Yuxin Reply:
Frostbite, see a dermatologist.[Read More] Understanding Frostbite: When to See a Dermatologist for Finger Injuries
Effective Treatments for Scars and Hyperpigmentation from Eczema
Scarring / Hyperpigmentation Can I ask the doctor, because I have long-term eczema and allergy issues, I tend to develop scars on the affected areas. What is the best way to remove these scars or hyperpigmentation? Is it effective to use scar gel? Thank you, doctor!
Dr. Wu Yuxin Reply:
It is mostly post-inflammatory hyperpigmentation, which does not lead to scarring. You can first consult a dermatologist to discuss relevant medications.[Read More] Effective Treatments for Scars and Hyperpigmentation from Eczema
Recovery After Fibroma Removal: What to Expect and Timeline
Recovery after fibroid removal? Hello Doctor: I have a fibroma on my leg that is about 0.8 centimeters in size. The doctor recommended surgical removal, and the procedure involved electrosurgery, which was done more deeply to ensure complete removal. I noticed that the wound has ...
Dr. Wu Yuxin Reply:
Without seeing the actual situation, it is impossible to determine. You should consult your attending physician, as they are the most familiar with your condition.[Read More] Recovery After Fibroma Removal: What to Expect and Timeline
Understanding Horizontal White Lines on Nails: Causes and Concerns
The appearance of transverse white lines on the nails? Hello, Doctor. I have two questions to ask: 1. I have a white line appearing on my toenail. Does this require further examination? The photo may not be very clear, but it looks like a horizontal white line that divides the na...
Dr. Wu Yuxin Reply:
Medical regulations state that "physicians must personally examine patients before administering treatment or prescribing medications," and therefore, online diagnosis is not permitted. If you are experiencing significant distress, please seek medical attention promptly...[Read More] Understanding Horizontal White Lines on Nails: Causes and Concerns
Exploring the Link Between HPV and Covid Vaccines and Recurrent Cold Sores
The possibility of recurrent herpes simplex virus outbreaks triggered by HPV and COVID vaccines? Hello Doctor, I received my third dose of the High-End vaccine in February this year, and I received the second dose of the HPV vaccine at the end of March. In early April, I experien...
Dr. Wu Yuxin Reply:
Unrelated. Cold sores are related to the condition of the immune system, so it is important to boost immunity in order to reduce recurrences.[Read More] Exploring the Link Between HPV and Covid Vaccines and Recurrent Cold Sores
Why Does My Ankle Itch Like Bugs Crawling While Brushing Teeth?
It feels like there are many insects crawling on my ankle while brushing my teeth? It has been a long time, probably since childhood, but I forgot. When I brush my teeth while standing, my ankles feel itchy, similar to the sensation of many bugs crawling. This happens especially ...
Dr. Wu Yuxin Reply:
I haven't encountered this before, but it might be a good idea to start by getting checked in the field of neurology.[Read More] Why Does My Ankle Itch Like Bugs Crawling While Brushing Teeth?
Can Steroid Injections Be Safely Administered on the Penis?
Can steroids be injected onto the foreskin of the penis? Hello doctor, after my circumcision, I developed scar tissue, and the doctor recommended steroid injections. I know that steroids can be injected into general skin, but I would like to ask if they can also be injected into ...
Dr. Wu Yuxin Reply:
Administer as needed, based on the clinical physician's judgment.[Read More] Can Steroid Injections Be Safely Administered on the Penis?
Using Topical A Acid: Timing and Best Practices for Skin Care
Third-generation topical retinoids? Hello, I usually finish showering around 8:30 PM. If I apply tretinoin (A acid) right after showering under the lights at home and then go to bed at 11 PM when the lights are off, is that acceptable? Do I have to apply it only right before bed?
Dr. Wu Yuxin Reply:
It's okay.[Read More] Using Topical A Acid: Timing and Best Practices for Skin Care
Common Questions About Warts: Infection, Transmission, and Prevention
Regarding warts? I would like to ask the doctor some personal questions: 1. If the fingertip has come into contact with molluscum contagiosum and has been observed for six months without any symptoms, can it be considered as non-infection? 2. Can the virus exist in the fingerti...
Dr. Wu Yuxin Reply:
1. Usually. 2. Not necessarily. 3. Breathable tape cannot do it. 4. It cannot be done. 5. It can be done. 6. About 24 hours. 7. If warts appear, it is not asymptomatic. 8. Proper handwashing is indeed necessary.[Read More] Common Questions About Warts: Infection, Transmission, and Prevention
Understanding Recurring Red Rashes on Hands: Causes and Solutions
Recurrent rashes on the hands? Hello, doctor! I frequently experience clusters of small red rashes on my fingers, back of my hands, and wrists, which are often accompanied by itching. The severity varies from mild to severe. What could this condition be? I have seen a doctor, but...
Dr. Wu Yuxin Reply:
Have you consulted with a physician? Since no lesions were observed, it is difficult to determine the underlying issue.[Read More] Understanding Recurring Red Rashes on Hands: Causes and Solutions
Vulvar Itching: When to See a Dermatologist or Gynecologist?
Vulvar itching Hello doctor, I would like to ask whether I should see a dermatologist or a gynecologist for symptoms of white scaling around the labia minora, along with itching and pain. Thank you.
Dr. Wu Yuxin Reply:
Everything is fine.[Read More] Vulvar Itching: When to See a Dermatologist or Gynecologist?