Identifying Mysterious Skin Rashes: What Bit You?
Skin bitten by insects? Walking outside in humid, rainy weather in the morning didn't seem to cause any issues, but after taking a shower, I noticed a rash on my leg. I'm unsure what bit me, but there is a wound in the center that looks similar to a vampire bite, with r...
Dr. Wu Yuxin Reply:
Without seeing the wound, I cannot determine anything.[Read More] Identifying Mysterious Skin Rashes: What Bit You?
Can I Use Topical Retinoids for Acne After Rosacea Treatment?
Use of ointment Hello, doctor. I was previously diagnosed with papulopustular rosacea. After treatment with antibiotics and topical metronidazole, my condition is now stable with no recurrence. However, I still have issues with acne and comedones on my face. I usually use azelaic...
Dr. Wu Yuxin Reply:
Sure.[Read More] Can I Use Topical Retinoids for Acne After Rosacea Treatment?
Post-Cyst Drainage Care: Recovery Tips and Bathing Guidelines
Care and Recovery After Cyst Drainage Hello Dr. Wu: Recently, I have been troubled by a sebaceous cyst that has affected my daily life, so I went to the plastic surgery department to have it removed. However, the doctor said the cyst is a bit large, so they first performed draina...
Dr. Wu Yuxin Reply:
I am not familiar with the condition of your wound; you should consult your attending physician.[Read More] Post-Cyst Drainage Care: Recovery Tips and Bathing Guidelines
Can I Use Calamine Lotion for Herpes-Like Bumps Near the Nose?
I have a question? Mom has a bump near the philtrum below the nostrils that looks like a herpes lesion. My sister often has angular cheilitis. Is it okay to apply BoroPlus cream?
Dr. Li Yufen Reply:
Hello: Baoling Fude Shuru Cream is primarily used to treat bacterial skin infections. If it is a simple herpes infection, specialized antiviral ointments can be used. For angular cheilitis, it is advisable to supplement with B vitamins and vitamin C, and topical oral ointments ca...[Read More] Can I Use Calamine Lotion for Herpes-Like Bumps Near the Nose?
Understanding New Moles: Are They Related to Your Health?
Mole pigmentation? Hello doctor, I recently noticed a prominent black mole on the skin of my genital area. It's not located on the labia minora, but rather on the outer skin of the labia majora. It's quite dark and I didn't have it before; it’s not very raised, mor...
Dr. Li Yufen Reply:
Hello: The evolution of common pigmented nevi can range from benign nevi to dysplastic nevi, or even malignant melanoma. For a detailed introduction to melanoma, you can refer to the article on Care Online: https://www.careonline.com.tw/2017/07/melanoma.html. If the skin conditio...[Read More] Understanding New Moles: Are They Related to Your Health?
Sudden Allergic Reactions: Uncovering Unknown Triggers After Cat Adoption
Unknown allergen suddenly causing an allergic reaction? I started raising a cat at the end of September and have been in contact with it daily. So far, I haven't experienced any allergies. On November 14, my diet was the same as usual, with no changes. That evening, I went t...
Dr. Li Yufen Reply:
Hello: If your current skin condition has not improved or has worsened, it is advisable to consult a dermatologist nearby for diagnosis and to assess whether further examination and treatment are necessary. You can find a doctor at http://www.derma.org.tw/user_finddoctor.php. If ...[Read More] Sudden Allergic Reactions: Uncovering Unknown Triggers After Cat Adoption
Understanding Decreased Sensation: A Dermatological Perspective
Decreased bodily sensation? Recently, I might be putting too much pressure on myself while studying, but I believe I am adjusting appropriately. In elementary school, I used to stay up late playing video games without feeling this way. Now, after studying seriously, I actually go...
Dr. Li Yufen Reply:
Hello: You can try supplementing with B vitamins first. If you do not notice an improvement in your symptoms or if they worsen, please consult a neurologist for further evaluation and treatment. Thank you![Read More] Understanding Decreased Sensation: A Dermatological Perspective
Should You See a Doctor for a Pimple-Like Cyst Releasing Pus?
The sebaceous cyst has released a small amount of pus? Hello doctor, I have a sebaceous cyst on my abdomen. I previously saw a dermatologist who injected it with what seemed to be a steroid (over a month ago), but it hasn't reduced in size. Today, I noticed a small amount of...
Dr. Wu Yuxin Reply:
If there is pain or if you wish to have it surgically removed, medical attention is necessary.[Read More] Should You See a Doctor for a Pimple-Like Cyst Releasing Pus?
Can You Use A Acid Acne Cream Without a Doctor's Prescription?
A Acid Acne Skin Moisturizer Due to the presence of many acne lesions, I would like to purchase a topical retinoid (A acid) for my skin. Can I use it on my own since I have never used it before and have not seen a dermatologist, or should I first consult a doctor for an evaluatio...
Dr. Wu Yuxin Reply:
This is a prescription medication that requires a physician's diagnosis before it can be prescribed. Self-medication is not recommended.[Read More] Can You Use A Acid Acne Cream Without a Doctor's Prescription?
Understanding Inner Thigh Black Spots: Causes and Treatments
Black spots on the inner thigh? I have black spots on the inner thighs that emit an odor when squeezed, resembling blackheads. The acne occasionally recurs, and this issue has troubled me for a long time. Sometimes the black spots are very noticeable and can be squeezed out, whil...
Dr. Wu Yuxin Reply:
If there are any concerns, it is advisable to seek medical attention.[Read More] Understanding Inner Thigh Black Spots: Causes and Treatments
Understanding Urea in Skincare: Is 1% Safe and Compliant?
Ingredient in skincare products - Allantoin Hello, doctor. I would like to ask if there is a percentage limit for the ingredient allantoin in skincare products. The product I am currently using contains 1% allantoin, and I am unsure if it complies with the regulatory limit of 0.5...
Dr. Wu Yuxin Reply:
The limitation on concentration percentages is primarily to distinguish between cosmetics and pharmaceuticals.[Read More] Understanding Urea in Skincare: Is 1% Safe and Compliant?
Effective Ways to Remove Blackheads from Your Nose
The nose has many comedones (blackheads and whiteheads)? How can I get rid of blackheads on my nose?
Dr. Wu Yuxin Reply:
There are many methods available; you can use alpha hydroxy acids (AHAs) or retinoic acid (tretinoin) for initial treatment. If you want a more advanced treatment approach, you will need to seek medical attention.[Read More] Effective Ways to Remove Blackheads from Your Nose
Black Bump Behind Ear: When to Seek Medical Attention?
A black object has developed behind the ear, and it is painful to touch? Hello doctor, I would like to inquire about a sudden appearance of a black object behind my ear, measuring less than 1 centimeter. It is painful to touch and there is no obvious black opening. After applying...
Dr. Wu Yuxin Reply:
If you are concerned, seek medical attention, as I cannot determine the issue without seeing it.[Read More] Black Bump Behind Ear: When to Seek Medical Attention?
What to Do If Your Cyst Wound Turns Black: Expert Advice
What should I do if a sebaceous cyst wound turns black? Hello: I originally had one sebaceous cyst (during my college years), but over the past two years, it seems to have developed into two cysts. I consulted a doctor, and the clinic physician mentioned that the two cysts appear...
Dr. Wu Yuxin Reply:
The dark coloration is not related to steroid use, but rather due to post-inflammatory hyperpigmentation resulting from repeated inflammation, which typically resolves over time. After the cyst removal surgery, there may be a localized indentation, but over time, most of these ar...[Read More] What to Do If Your Cyst Wound Turns Black: Expert Advice
Understanding Bruised Toes: When to Seek Medical Attention
Bruised toe Approximately in mid-November, I sustained a bruise on my right foot due to work-related activities. Initially, only my right big toe was affected, but the next day, I noticed a bruise appearing on my left big toe as well. The bruise on my left foot is smaller, while ...
Dr. Wu Yuxin Reply:
I kicked my right foot, but now my left foot has also developed a bruise. I should let the doctor take a look.[Read More] Understanding Bruised Toes: When to Seek Medical Attention
Understanding Bruising: When to Seek Medical Attention for Painful Bumps
Small bruise with pressure-induced subcutaneous hemorrhage? Two weeks ago, I noticed a small blue bump on my right thigh that is painful to the touch. After discovering it, I pressed on it, and the next day, there was significant bruising around the area. However, pressing on the...
Dr. Wu Yuxin Reply:
Generally, bruises will resolve within one to two weeks, and it is advisable to observe them for now. The primary cause of bruising is the rupture of microvessels, but the specific reasons for the rupture can vary.[Read More] Understanding Bruising: When to Seek Medical Attention for Painful Bumps
Unexplained Itching: Is It Possible to Have Bites on One Leg Only?
Insect bites? Recently, I have been experiencing a recurring condition on my foot that resembles mosquito bites (but I am certain it is not from mosquitoes). The affected area is below the knee, primarily concentrated around the ankle and the top of the foot. When one area heals,...
Dr. Li Yufen Reply:
Hello: It is not possible to accurately diagnose skin diseases based solely on a textual description. For a detailed introduction to insect bites, you can refer to Dr. Lin Cheng-Hsien's article at https://www.dr-skin.com.tw/health/view/20. If the skin condition does not impr...[Read More] Unexplained Itching: Is It Possible to Have Bites on One Leg Only?
Managing Shingles During Pregnancy: Concerns and Treatment Options
Developed shingles at 37 weeks of pregnancy? Hello, Doctor. I am currently 37 weeks and 3 days pregnant and was diagnosed with shingles two days ago. The blisters are primarily located on the right side of my forehead and above my right eyelid. During my visit, the doctor prescri...
Dr. Wu Yuxin Reply:
1. It takes about a week to heal, and the fetus will have the mother's antibodies for the first few months, which has a minimal impact. 2. Related.[Read More] Managing Shingles During Pregnancy: Concerns and Treatment Options
Understanding Yellowish Skin with Black Spots: Dermatology Insights
A patch of yellow skin with black spots? There is a yellow-green patch of skin on my body that appears yellow with black spots. The black spots become more noticeable when I stretch the skin, but they don't look very dark, and there are many of them. The location is on the r...
Dr. Wu Yuxin Reply:
Please seek medical attention! It's unclear what issue you are trying to express.[Read More] Understanding Yellowish Skin with Black Spots: Dermatology Insights
Can Shingrix Vaccine Help Prevent Recurrence of Herpes Simplex?
Shingles vaccine Hello, doctor. I have a history of type 2 herpes simplex virus, with outbreaks occurring occasionally on my genitals and in the groin area, about once every two to three months or every six months. Recently, I came across the SHINGRIX vaccine for shingles. Will r...
Dr. Wu Yuxin Reply:
Currently, there is no vaccine for type 2 herpes simplex virus, and vaccination against varicella-zoster virus does not provide any benefit.[Read More] Can Shingrix Vaccine Help Prevent Recurrence of Herpes Simplex?