Understanding Junctional Nevi on Feet: Risks and Management
Concerns about moles on the feet? Dear Dr. Li, I had a nail puncture my right foot during childhood, and after healing, a pigmented lesion gradually formed at the site, resulting in a black junctional nevus approximately 0.4 mm in size. This lesion has not changed in size or col...
Dr. Li Yufen Reply:
Hello: For a detailed introduction to melanoma, you can refer to the articles on the Skin Expert Health Network at http://www.drskincare.com.tw/Qa/Detail.aspx?ID=45 and http://www.drskincare.com.tw/Qa/Detail.aspx?ID=44. If you still have questions, it is advisable to consult a ne...[Read More] Understanding Junctional Nevi on Feet: Risks and Management
Infected Callus Near Heel: Causes, Symptoms, and Treatment Options
There is a pus-filled corn near the heel, and after the pus drains out, it forms a wound? Hello Doctor: About two to three weeks ago, I developed a corn approximately 1 cm in size near the edge of my left foot close to the heel, which was somewhat raised. A few days later, I felt...
Dr. Wu Yuxin Reply:
No lesions were observed, making it difficult to determine the issue. If it is causing significant distress, please seek medical attention promptly.[Read More] Infected Callus Near Heel: Causes, Symptoms, and Treatment Options
Understanding Toenail Breakage: Causes, Symptoms, and Treatment Options
Nail fracture Hello Doctor :) A few years ago, my left big toe started to have the nail break from the root (showing a crescent shape). At first, I didn't think much of it, assuming that I could just wait for the nail to grow out and trim it. However, after cutting the nail,...
Dr. Wu Yuxin Reply:
Medical regulations state that "a physician must personally examine a patient before administering treatment or prescribing medication," and therefore, online diagnosis is not permissible. If you are experiencing significant distress, it is advisable to seek medical att...[Read More] Understanding Toenail Breakage: Causes, Symptoms, and Treatment Options
Understanding Mosquito Bites: Why Some Leave Scars and How to Treat Them
Insect bites? Doctor, I usually get bitten by mosquitoes at home, and the bites go away quickly without leaving scars. However, about a year ago, I started getting bitten frequently during outdoor classes at school. I'm not sure if it's from mosquitoes, but the bite mar...
Dr. Wu Yuxin Reply:
Whether a mosquito bite requires examination depends on the situation. Typically, what remains is hyperpigmentation, which can be treated with whitening creams.[Read More] Understanding Mosquito Bites: Why Some Leave Scars and How to Treat Them
Understanding Ankle Skin Bumps: Causes, Treatments, and Steroid Use Concerns
There is a swollen, unusual area on the ankle that feels fluid-filled to the touch (see attached image)? The symptoms are as shown in the image (Google link: https://tinyurl.com/y8xcbcpt). I would like to ask the doctor what these symptoms are. I visited a doctor a few days ago, ...
Dr. Li Yufen Reply:
Hello: From the photos, the lesions appear to have a reaction similar to insect bites, but a physical examination would provide a more accurate assessment. Common culprits in everyday life could be mosquitoes, ants, or fleas. If there are concerns about oral corticosteroids, cons...[Read More] Understanding Ankle Skin Bumps: Causes, Treatments, and Steroid Use Concerns
Is It Dyshidrotic Eczema or Athlete's Foot? Understanding Your Symptoms
Dyshidrotic eczema or athlete's foot? Hello doctor, since I visited the Gaomei Wetlands in Taichung, I have developed blisters on the toes of my right foot, specifically on the index and middle toes. They heal on their own but then start to peel. The small blisters are somew...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is impossible to determine the issue. If it is very concerning, please seek medical attention as soon as possible. Only after an examination can the problem be identified and addressed.[Read More] Is It Dyshidrotic Eczema or Athlete's Foot? Understanding Your Symptoms
Understanding Treatment Options for Viral Warts on Toes: Expert Insights
May I ask the doctor? Dear Dr. Wu, I would like to ask about my father's condition. Recently, he has developed thick calluses on the outer sides of both big toes, and the skin on the big toes appears somewhat rough. A dermatologist diagnosed it as a viral wart and recommend...
Dr. Wu Yuxin Reply:
1. The combination of cryotherapy and wart treatment solution yields the best results. 2. The principles of new and old treatments remain the same. 3. It is likely that too much wart treatment solution was applied, causing it to spread to normal tissue. 4. You can try gentl...[Read More] Understanding Treatment Options for Viral Warts on Toes: Expert Insights
Understanding Occasional Tingling Sensations in the Skin
Occasional tingling sensation in the skin? Previously, I experienced a prickling sensation in my fingertips (and toes as well) and on the skin of my body (arms, abdomen, calves, etc.), which would occasionally occur and then disappear quickly. Later, I consulted a traditional Chi...
Dr. Wu Yuxin Reply:
It may be necessary to consult a neurologist.[Read More] Understanding Occasional Tingling Sensations in the Skin
Understanding Nail Changes: Causes of Discoloration and Separation
Nail dystrophy Hello Dr. Wu, I woke up last night and noticed that my right big toe was very painful. It hurt more with light pressure. When I got up to check, there was no swelling or external injury, but I noticed a faint bruise under the nail (it was very light, but compared t...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is impossible to determine the issue. If it is causing significant distress, please seek medical attention promptly. A proper evaluation is necessary to understand the problem and determine the appropriate treatment.[Read More] Understanding Nail Changes: Causes of Discoloration and Separation
Understanding Shingles: Treatment Options and the Role of B12 Injections
Shingles Dr. Wu: Hello! I have been suffering from shingles on my left leg, from my toes to my hip, for four weeks now (at the same time, I have cellulitis on the sole of my left foot and initially sought treatment at Cathay General Hospital). I started treatment at National Taiw...
Dr. Wu Yuxin Reply:
In principle, there are not many side effects. For this issue, you should consult your attending physician, as they are most familiar with your condition and can help you choose the appropriate medication.[Read More] Understanding Shingles: Treatment Options and the Role of B12 Injections
Why Do Mosquito Bites Swell Without Itching? Understanding Your Skin's Reaction
If a mosquito bite causes swelling but does not itch, what could be the issue? I used to have the same reaction to mosquito bites as most people, experiencing swelling and itching. However, recently, no matter how many times I'm bitten, I don't feel itchy at all. While ...
Dr. Li Yufen Reply:
Hello: Regarding insect bites, you can refer to Dr. Lin Cheng-Hsien's article at http://jslin.tw/insect_bite/. Thank you![Read More] Why Do Mosquito Bites Swell Without Itching? Understanding Your Skin's Reaction
Understanding Foot Skin Issues: From Athlete's Foot to Peeling Skin
Athlete's foot? Dyshidrotic eczema? Pure desquamation? In April 2016, the skin between my right foot's middle toe and little toe cracked open to the point where flesh was visible. After showering, the skin between my toes would turn white and rotten, and there was a sma...
Dr. Wu Yuxin Reply:
1. It should not be necessary to go to a medical center. 2-3. It is important to correlate with clinical symptoms and medical history; there are no specific testing methods. 4. It is ineffective. 5. It is possible. 6. It can be removed, but it may not be completely eradic...[Read More] Understanding Foot Skin Issues: From Athlete's Foot to Peeling Skin
Symmetrical Nail Shedding: Possible Causes and Concerns
Symmetrical nail shedding? Hello, doctor. I have a symmetrical peeling issue with the middle toes of both feet. Initially, the toenails gradually turned white, and then they became completely white before peeling off. This has happened once in the past couple of years, and I reca...
Dr. Li Yufen Reply:
Hello: Thyroid diseases can sometimes cause abnormalities in nail growth. If you notice persistent or worsening skin changes, it is advisable to consult a dermatologist for diagnosis and treatment. Thank you![Read More] Symmetrical Nail Shedding: Possible Causes and Concerns
Unexplained Skin Irritations: Persistent Brown Spikes on Toes
Unknown small prick? When walking in shoes, I noticed that my toes were very painful. After taking off my socks, I found many small, unidentified brown spikes on them. I went to see a doctor, who prescribed medication to accelerate skin shedding. However, after two or three days,...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is impossible to determine the issue; one must observe it to understand the problem and be able to address it.[Read More] Unexplained Skin Irritations: Persistent Brown Spikes on Toes
Questions About Oral Medications for Toenail Fungus Treatment
Questions regarding oral medications for onychomycosis? Hello doctor, I have been experiencing symptoms of onychomycosis (fungal nail infection) on my toes for over a year. Recently, I started seeing a dermatologist for treatment. Initially, I received medication in central Taiwa...
Dr. Wu Yuxin Reply:
These two medications contain the same active ingredient; they are just produced by different manufacturers.[Read More] Questions About Oral Medications for Toenail Fungus Treatment
Understanding Uncommon Acne: Causes, Symptoms, and Treatment Options
Acne issues? Hello: I have some questions related to acne. 1. My neck often itches, and after scratching, it develops a bump that looks like a pimple, but sometimes it appears as a swollen lump that is not painful and doesn't resemble a typical acne lesion. What type of ac...
Dr. Li Yufen Reply:
Hello: For a detailed introduction to acne, you can refer to the article on the Dermatology Expert Health Network at http://www.drskincare.com.tw/Qa/index.aspx?CID=41,2: Simply relying on textual descriptions cannot accurately diagnose skin diseases. Prolonged scratching of the s...[Read More] Understanding Uncommon Acne: Causes, Symptoms, and Treatment Options
Is It Scabies or Dyshidrotic Eczema? Understanding Your Skin Condition
Uncertain whether it is scabies or dyshidrotic eczema? Last October and this May, I experienced eczema, and the doctor prescribed me BCC and BCG ointments to apply. At that time, I was being treated at a clinic near my school in Taipei. After moving to Taipei for my studies, I oc...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is difficult to determine the issue. If it is causing you significant distress, please seek medical attention as only a professional can assess the problem and provide appropriate treatment. It sounds like you are a cautious person, so if yo...[Read More] Is It Scabies or Dyshidrotic Eczema? Understanding Your Skin Condition
Understanding Toenail Issues: Should You Cut or Leave It Alone?
The outer side of the big toe is not attached to the flesh? The outer nails of both my big toes are not attached to the skin for some reason. If I really need to trim them, I can cut them to about one-third of their depth, but I've read online that cutting toenails straight ...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is impossible to determine the issue. If it is very concerning, please seek medical attention as soon as possible. A proper evaluation is necessary to understand the problem and to determine the appropriate treatment.[Read More] Understanding Toenail Issues: Should You Cut or Leave It Alone?
Understanding Scabies: Symptoms, Diagnosis, and Treatment Options
Scabies infection Last Sunday, I touched the toes of a person with bedbugs for about ten minutes. After that, I washed my hands, but today I feel itchy and have a sensation of something crawling on my body. I visited a dermatologist on Thursday, and the doctor prescribed me a top...
Dr. Wu Yuxin Reply:
Preventive medication can be administered in advance.[Read More] Understanding Scabies: Symptoms, Diagnosis, and Treatment Options
Dealing with Mosquito Bites: When to Use OTC Remedies vs. See a Dermatologist
Mosquito bites A long time ago, my foot was bitten by mosquitoes, and currently, there is a small round bump that resembles a lipoma with no external injury. This spot is often extremely itchy. Should I go to the pharmacy to buy oral medication along with topical ointment, or do ...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is impossible to determine the issue. If it is very concerning, please seek medical attention as soon as possible. A proper examination is necessary to understand the problem and to determine the appropriate treatment.[Read More] Dealing with Mosquito Bites: When to Use OTC Remedies vs. See a Dermatologist