Effective Use of Azelaic Acid: Dosage, Duration, and Moisturizing Tips
Regarding rhododendron acid? Hello, I am currently using azelaic acid at a concentration of 20%, applying it once in the morning and once at night. I apply it to my entire face, so I would like to know how much product I should use for each application to be effective. How long w...
Dr. Wu Yuxin Reply:
As long as there is no allergic reaction, it can continue to be used. The general guideline for application is to apply it twice until the ointment is no longer visible; there is no need to apply excessively. Fading of acne scars typically takes about 1-2 months, and it also depe...[Read More] Effective Use of Azelaic Acid: Dosage, Duration, and Moisturizing Tips
Understanding Skin Bumps: Causes and Solutions for Your Concerns
Acne on the hands, feet, and chest? I have a small blister on my lips, and I also have a similar blister-like lesion on my hands. Additionally, I seem to have small bumps on my chest. I often play basketball and sweat, which may be causing irritation on my chest or feet. Sometime...
Dr. Lin Xinpeng Reply:
Hello: The symptoms you mentioned may not necessarily be related. Blisters on the lips or around the mouth are most likely due to herpes simplex virus infection, which is associated with your immune system. Applying antiviral ointment can lead to improvement within about a week, ...[Read More] Understanding Skin Bumps: Causes and Solutions for Your Concerns
Understanding White Bumps on Genitals: Causes and Treatment Options
The genitals exhibit symptoms similar to acne? Hello, Director Yang. I would like to ask about white bumps resembling acne on the genital area (excluding the glans) and scrotum. When the skin is stretched, these bumps become more prominent, and sometimes I can extract them like b...
Dr. Yang Zhiya Reply:
It could be miliaria. If it does not affect your daily life, treatment may not be necessary. However, it is still advisable to consult a dermatologist for confirmation. Thank you![Read More] Understanding White Bumps on Genitals: Causes and Treatment Options
Struggling with Persistent Acne: Causes and Solutions for Clear Skin
The issue of acne has been troubling me for a long time? Hello Doctor: Since I developed a large pimple on my nose in sixth grade, acne has been a persistent issue for me, and now I'm almost twenty. Initially, the acne kept recurring on my nose, but now it has shifted to my ...
Dr. Yang Zhiya Reply:
There are many causes of acne, including oily skin, inadequate cleansing, environmental pollution, lifestyle habits, diet, and hormones. Your situation sounds more like pustular acne. It is recommended that you work closely with your dermatologist for treatment to minimize the ri...[Read More] Struggling with Persistent Acne: Causes and Solutions for Clear Skin
How to Use Toner for Oily Skin: Tips for You and Your Father
How to use toner? Doctor: I have oily skin and I'm using Sebamed's acne-specific toner. I'm not sure how many times a day I should use it. My father also has oily skin; can he use it as well? Thank you!
Dr. Yang Zhiya Reply:
The purpose of toner is to provide the skin with some hydration before applying skincare products. It is typically used after washing the face, and the frequency of use depends on how often one washes their face. It is important for individuals to try any skincare product to see ...[Read More] How to Use Toner for Oily Skin: Tips for You and Your Father
Could These White Bumps on My Genitals Be a Skin Condition?
Is it a skin disease? Hello Doctor: I have developed many white raised bumps at the base of my penis and on my scrotum, resembling acne-like lesions, about the size of a grain of rice. They do not burst when pressed, and there is no discharge. Sometimes they itch, and this has be...
Dr. Wu Yuxin Reply:
I can't diagnose without seeing it! Could you please consult a dermatologist in person?[Read More] Could These White Bumps on My Genitals Be a Skin Condition?
Understanding Skin Bumps: What Could They Be Besides Acne?
It looks like acne but is not acne? Hello, I recently noticed that there are small bumps near my right armpit that resemble pimples but are not actually pimples. When I try to squeeze them, they do not ooze pus like regular pimples; instead, a small, whitish substance comes out, ...
Dr. Guo Fengsheng Reply:
Hello: It is recommended to pay attention to skin cleanliness and avoid squeezing. Maintaining clean skin is the most important. If you have any questions, you can visit the dermatology outpatient clinic for follow-up treatment. Changhua Hospital cares about you.[Read More] Understanding Skin Bumps: What Could They Be Besides Acne?
Is Fraxel Laser Effective for Treating Acne? Expert Insights
Fractional laser Hello Dr. Wu, I would like to ask if the Pico laser is really effective for acne. My daughter underwent laser treatment last year, but the results were not satisfactory. Since she will be returning home for summer vacation in May, I wanted to inquire on her beh...
Dr. Wu Yuxin Reply:
The fractional laser is indeed effective for improving depressed acne scars and enlarged pores, but it should be noted that it provides "improvement" rather than "complete resolution." The effectiveness must be assessed based on the severity of the condition, ...[Read More] Is Fraxel Laser Effective for Treating Acne? Expert Insights
Understanding Facial Rash: Causes and Treatments for Red Spots
Rash on the facial contours? Hello Doctor: Recently, the contours of my face have become red and developed small red spots that are itchy. Sometimes, I also get tiny bumps that resemble acne or whiteheads, and in more severe cases, they develop into larger pimples with pus. I hav...
Dr. Yang Zhiya Reply:
There are many causes of facial rashes, including allergies, acne, various types of dermatitis, and autoimmune conditions. A direct examination by a dermatologist is necessary to provide a diagnosis, education, and treatment.[Read More] Understanding Facial Rash: Causes and Treatments for Red Spots
Can Acne Scars Be Healed? Expert Insights on Skin Treatment
Can acne scars on the face be treated? Hello, doctor: Can acne scars on the face be treated? Please respond, thank you.
Dr. Wu Yuxin Reply:
Which type of acne scars are you referring to? Red acne scars and dark acne scars can generally be treated, but for atrophic scars, the treatment depends on the severity. Shallow scars may improve by about 60-70%, while deeper scars may improve by about 30-40%.[Read More] Can Acne Scars Be Healed? Expert Insights on Skin Treatment
Understanding Painful Bumps on the Buttocks: Causes and Solutions
Blisters-like lesions on the buttocks? This has been a problem that has troubled me for several years. It started with small lumps appearing on my buttocks, and initially, I asked my mother, who thought it was acne. However, it has now become increasingly severe. Currently, my bu...
Dr. Yang Zhiya Reply:
Based on your symptoms, it could be folliculitis, herpes, a sebaceous cyst, or various types of blistering or inflammatory conditions. Therefore, it is recommended that you visit a dermatology clinic, where a physician can personally examine the lesions for a more accurate diagno...[Read More] Understanding Painful Bumps on the Buttocks: Causes and Solutions
Effective Treatments for Acne Scars, Hair Loss, and Scalp Scarring
Acne scars Hello Doctor: 1. The patient has deep and shallow acne scars on the face. What treatment conditions are necessary for the face to become smooth again? 2. The patient is experiencing hair loss on the scalp. What treatment conditions are required for hair regrowth? 3. Th...
Dr. Wu Yuxin Reply:
1. Both superficial and deep acne scars can be treated using carbon dioxide lasers, erbium-chromium lasers, or fractional lasers. I apologize, but your question is too general for me to provide a specific answer. If you are inquiring about your own situation, please seek medical ...[Read More] Effective Treatments for Acne Scars, Hair Loss, and Scalp Scarring
Persistent Back Pain and Acne: Seeking Dermatological Insights
Hello, doctor? Hello Doctor, I have been troubled by this issue for three years. I have seen several dermatologists and even my family doctor recommended that I see a neurologist. I also visited an orthopedic specialist for X-rays, but all the doctors said there was nothing wrong...
Dr. Lin Xinpeng Reply:
Hello: Your issue needs to first determine whether acne can cause the pain you described. Theoretically, acne, folliculitis, and cystic inflammation are mostly confined to the upper dermis, and based on your description, the lesions should not cause such severe pain. Therefore, I...[Read More] Persistent Back Pain and Acne: Seeking Dermatological Insights
Understanding Unusual Skin Conditions on Your Father's Back
There is an unusual condition on the father's back? Hello Doctor, I would like to inquire about my father's condition. He is 65 years old and has had an issue on his back near the shoulders and the center of the right side for a long time. It's not exactly a proble...
Dr. Wu Yuxin Reply:
Based on your description, it seems to be a sebaceous cyst. However, a definitive diagnosis can only be made after an examination. Generally, no special treatment is required; if treatment is necessary, you may consider having a surgeon perform an excision.[Read More] Understanding Unusual Skin Conditions on Your Father's Back
The Healing Powers of Bamboo Vinegar: Myths and Facts for Skin Issues
The efficacy of bamboo vinegar liquid for skin diseases? Hello, Dr. Wu! I went on a trip with a group and bought a bottle of bamboo vinegar. The "general manager" selling it claimed that it is a natural product that can relieve toothaches when sprayed on teeth, help cle...
Dr. Wu Yuxin Reply:
Bamboo vinegar is a byproduct of the carbonization process of bamboo. Its main components are acetic acid and some phenolic compounds, with a pH value of around 3, making it a moderately strong acid. It is important to confirm whether it has been diluted before use to avoid irrit...[Read More] The Healing Powers of Bamboo Vinegar: Myths and Facts for Skin Issues
Is Long-Term Use of Doxycycline Safe for Acne Treatment?
Can doxycycline be taken long-term? Hello, doctor. I previously underwent treatment for acne and took doxycycline for nearly a year. After my acne stabilized, I stopped the medication as per my doctor's instructions. However, recently my acne has slightly recurred, and my do...
Dr. Lin Xinpeng Reply:
Doxycycline is a modern tetracycline antibiotic, with the most common side effects being gastrointestinal irritation and photosensitivity. Only a very small number of patients may experience liver function abnormalities, such as elevated GOT and GPT levels, or acute liver necrosi...[Read More] Is Long-Term Use of Doxycycline Safe for Acne Treatment?
Effective Ways to Fade Acne Scars on Your Skin
Acne scars Hello Dr. Kuo: I have many spots on my face and acne scars left from breakouts. Could you please advise on how to lighten these scars? Thank you, Dr. Kuo. I appreciate your guidance.
Dr. Guo Fengsheng Reply:
Generally, whitening products can be applied. For those looking for quicker results, whitening infusion treatments or intense pulsed light (IPL) therapy can be added.[Read More] Effective Ways to Fade Acne Scars on Your Skin
Understanding Neck Acne: Causes and Solutions for Persistent Breakouts
Acne on the neck? Hello Doctor: I have a tendency to develop acne easily. I have been seeing a dermatologist for a long time, and my condition has stabilized. However, whenever I eat the wrong foods or drink cold water, I break out. Recently, for some reason, I have been getting ...
Dr. Wu Yuxin Reply:
Due to the lack of direct observation, a definitive diagnosis cannot be established; however, based on your description, it is likely a cystic type. The cystic type is associated with lifestyle factors such as staying up late, insomnia, and the menstrual cycle in women. Additiona...[Read More] Understanding Neck Acne: Causes and Solutions for Persistent Breakouts
Understanding Painful Red Bumps on the Face: Causes and Concerns
A painful, swollen bump? Hello, doctor: In the past two to three days, I have developed two small, red bumps on my face. I have experienced similar issues before, particularly on my chin. Each time, the situation is quite similar; it starts with a small bump that feels somewhat h...
Dr. Guo Fengsheng Reply:
This is likely deep acne, as it is blocked deep within the pores and cannot be expelled, leading to the aforementioned condition. Generally, it will resolve on its own, but it may take a longer time. Alternatively, the use of topical retinoids can help accelerate skin metabolism.[Read More] Understanding Painful Red Bumps on the Face: Causes and Concerns
Can You Dye or Perm Hair with Scalp Acne? Expert Advice
Scalp issues Hello Dr. Kuo: It seems that I keep getting something similar to pimples on my scalp. I went to see a dermatologist, and they also said it was acne. Can I dye or perm my hair in this condition? What effects could it have? (I have already permed my hair and would like...
Dr. Guo Fengsheng Reply:
Dyeing and perming are not recommended, as these chemical irritants can disrupt the normal microbial ecology of the scalp, potentially exacerbating scalp folliculitis.[Read More] Can You Dye or Perm Hair with Scalp Acne? Expert Advice