Understanding Red Rashes on the Lower Legs: Causes and Treatments
Red rashes (spots?) on the calf? A rash has developed on the calf, initially presenting as a red patch that itched, but later transformed into red spots (or macules). The rash is neither painful nor itchy, and there are no raised or depressed areas. The redness is a deep crimson ...
Dr. Wu Yuxin Reply:
I'm not sure what you are asking?[Read More] Understanding Red Rashes on the Lower Legs: Causes and Treatments
Sudden Appearance of a Small Black Spot on Arm: What It Could Be
A small black dot suddenly appeared on my arm? Hello, doctor. Today I suddenly noticed a black bump on my arm that is less than 0.1 cm, slightly raised. Upon closer observation, I found a few small black dots around the bump (forming a circle, with the center being clear, but the...
Dr. Li Yufen Reply:
Hello: Based solely on the textual description, it is not possible to accurately diagnose a skin condition. The most common black spots on the skin could be pigmented nevi (moles). If a pigmented nevus grows too quickly or shows changes in shape, color, or bleeding, there may be ...[Read More] Sudden Appearance of a Small Black Spot on Arm: What It Could Be
Brown Spot in One Armpit: Causes, Itching, and Odor Solutions
A brown spot has appeared on one side of the armpit, which is itchy and has an odor? A brown patch has appeared in one armpit, which is itchy and has an odor. There was no odor before the brown patch appeared, and the individual typically does not sweat much. What could be the ca...
Dr. Li Yufen Reply:
Hello: Based solely on the textual description, it is not possible to accurately diagnose a skin condition. The most common causes of brown spots in the armpit are tinea corporis or tinea versicolor, but there may be other conditions as well. If the skin condition does not improv...[Read More] Brown Spot in One Armpit: Causes, Itching, and Odor Solutions
Understanding Scabies: Misdiagnosis, Treatment Challenges, and Recovery
Scabies issues? Hello Doctor, I previously had a scabies infection that did not improve after several months of treatment, and I consulted different doctors who diagnosed me with eczema, fungal infections, and sweat dermatitis. It wasn't until April of this year, when I retu...
Dr. Wu Yuxin Reply:
You need to see it to know; the symptoms of scabies and dyshidrotic eczema can be quite similar, and it is necessary to examine other areas to make a definitive diagnosis.[Read More] Understanding Scabies: Misdiagnosis, Treatment Challenges, and Recovery
Understanding Post-Injury Infections: What to Do After a Foreskin Injury
It seems that the foreskin has been injured and is possibly infected? Hello Doctor: I work at a construction site and had a sexual encounter at an adult venue where I received a handjob from a sex worker about a month ago. I sustained a serious injury, and it hurts when I wash or...
Dr. Wu Yuxin Reply:
I cannot provide a diagnosis directly here. If you are feeling very unwell, it is important to seek treatment at a hospital as soon as possible.[Read More] Understanding Post-Injury Infections: What to Do After a Foreskin Injury
Understanding Skin Issues: Dark Spots Under Eyes After Sun Exposure
Skin issues Hello, Doctor. This morning when I woke up and washed my face, I noticed a dark spot under my eyes that looks like a blemish, but it wasn't there a few days ago. I only noticed it after going hiking yesterday, where I might have been exposed to too much sun. Addi...
Dr. Wu Yuxin Reply:
We cannot perform online diagnoses in this manner; we recommend that you see a dermatologist for evaluation and treatment as soon as possible.[Read More] Understanding Skin Issues: Dark Spots Under Eyes After Sun Exposure
Understanding Hair Loss: Causes, Treatments, and Timing for Prevention
About baldness? Hello Doctor: Recently, I've noticed an increase in the amount of hair in my bathroom. I visited a dermatologist a while ago, and the doctor mentioned that one can refer to their parents to predict future hair loss. Both of my parents have severe baldness, so...
Dr. Wu Yuxin Reply:
1. Excessive force can certainly lead to hair loss. 2. There are hair growth solutions indicated for treating hair loss that have some effectiveness. 3. Unless the hair follicles have already atrophied and the pores are closed, it is still necessary to examine the scalp condition...[Read More] Understanding Hair Loss: Causes, Treatments, and Timing for Prevention
Understanding Dark Spots on Toenails: When to Seek Medical Advice
A black spot on the toenail? Hello, doctor! Recently, I noticed a dark spot on my left big toe nail. I don't recall any injury, and it doesn't hurt when I press on it. A few days ago, it looked somewhat like a bruise, purple but not very noticeable, but today it has tur...
Dr. Wu Yuxin Reply:
No lesions were observed, making it difficult to determine the issue. If this is causing significant distress, please seek medical attention promptly.[Read More] Understanding Dark Spots on Toenails: When to Seek Medical Advice
How to Treat Scarring from Mosquito Bites: Effective Solutions
Mosquito bites can leave scars that appear as raised dark spots? Over a year ago, I was bitten extensively on both feet by small black mosquitoes, and now I still have scars (small black raised spots). Sometimes when I get bitten by new mosquitoes, I feel itching in other areas a...
Dr. Wu Yuxin Reply:
You can see a dermatologist for a localized injection.[Read More] How to Treat Scarring from Mosquito Bites: Effective Solutions
Understanding Red Spots and Skin Cancer: What You Need to Know
Erythema & Skin Cancer Concerns Hello Doctor: I would like to inquire about an irregular light red patch on the inner side of my right arm, which is also mixed with some bright red spots (similar to being dotted with a very fine red pen). It does not itch or hurt, and I would...
Dr. Li Yufen Reply:
Hello: It is not possible to diagnose skin cancer based solely on photographs. It is recommended to consult a nearby dermatologist to determine if a skin biopsy is necessary. Thank you![Read More] Understanding Red Spots and Skin Cancer: What You Need to Know
Understanding Dark Spots on Knees: Causes and Treatment Options
Knee hyperpigmentation Hello Doctor, I haven't injured my knee recently, but I have developed some painless and itchy black spots, as shown in the image. I would like to inquire about the possible causes and how to improve this condition, as well as whether I should seek med...
Dr. Wu Yuxin Reply:
I'm sorry, but current medical regulations do not allow for online diagnoses in this manner. If it is inconvenient to visit a hospital or clinic due to the pandemic, you may consult dermatology clinics that offer telemedicine services, which can provide you with the necessar...[Read More] Understanding Dark Spots on Knees: Causes and Treatment Options
Understanding Unusual Growths on the Penis: A Dermatological Perspective
I would like to inquire about issues related to growths on the penis? Hello doctor, I developed a somewhat white, raised, round bump on the right side of the coronal sulcus of my penis around the end of last year. It is somewhat hard, and pressing it causes a slight pain. Since I...
Dr. Wu Yuxin Reply:
Urologists can assist with biopsy examinations, and pathological testing is the most accurate.[Read More] Understanding Unusual Growths on the Penis: A Dermatological Perspective
Understanding Clustered Brown Spots: When to Seek Dermatological Advice
Dense small spots that resemble moles or freckles? Hello doctor, I recently noticed a small area on the side of my buttocks with many small spots that are a coffee color similar to moles. Some of them are very close to each other. After taking a photo, I also noticed some very ti...
Dr. Wu Yuxin Reply:
If there are concerns, why still complain about the cost of seeing a doctor? Without an examination, I cannot know what the potential issues might be.[Read More] Understanding Clustered Brown Spots: When to Seek Dermatological Advice
Understanding Groin Fungal Infections and Inner Thigh Rashes
Fungal infection and rash on the inner thighs? Originally, I went to see a dermatologist because of tinea cruris. Although it had been years (it used to itch, but then it stopped), the area of the tinea cruris was getting larger, so I sought medical attention. After applying a to...
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. Only after an examination can the problem be identified and addressed.[Read More] Understanding Groin Fungal Infections and Inner Thigh Rashes
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?
Understanding Persistent Red Bumps on the Skin: Causes and Next Steps
Localized raised rash Two weeks ago, multiple small red spots, about the size of a coin, appeared on my left arm. There are no wounds, and they feel like bumps; they are neither painful nor itchy, but there has been no sign of improvement. I have applied lotion, Neosporin, and st...
Dr. Wu Yuxin Reply:
No lesions were observed, making it difficult to determine the issue. It is also unclear whether to continue monitoring or to address the situation immediately. If you are very concerned, please seek medical attention promptly.[Read More] Understanding Persistent Red Bumps on the Skin: Causes and Next Steps
Understanding Dark Spots Under Fingertip Skin: Causes and Concerns
Grayish lumps in the skin at the fingertips? Hello doctor, about a month ago I noticed a small dark spot on the tip of my right middle finger that is a brownish-gray color. It seems to be located deeper in the skin, is not raised, and does not hurt. I didn't pay much attenti...
Dr. Wu Yuxin Reply:
Without actually seeing the lesion, it is impossible to determine. If it is very concerning, please seek medical attention as soon as possible.[Read More] Understanding Dark Spots Under Fingertip Skin: Causes and Concerns
Understanding Pearly Penile Papules: Causes and Treatment Options
There are small white bumps on the glans and foreskin? Hello Doctor: I have small white spots on my glans and foreskin, totaling about twenty. They have been present for four years, with no increase in number, and they are not painful or itchy. The appearance of the white spots h...
Dr. Wu Yuxin Reply:
If it is Fordyce spots, no treatment is necessary.[Read More] Understanding Pearly Penile Papules: Causes and Treatment Options
Will Sunburn-Induced White Spots on Skin Heal Naturally?
Post-sunburn hypopigmentation Hello, doctor. I would like to ask, I had a sunburn on my hand half a month ago, which went through redness and peeling, and recently I have noticed some white patches appearing. Will the color return on its own?
Dr. Wu Yuxin Reply:
Post-inflammatory hypopigmentation may take several months to recover.[Read More] Will Sunburn-Induced White Spots on Skin Heal Naturally?
Understanding Red Spots on Hands and Feet: Cherry Angioma Insights
Inquiry about red spots? Hello Doctor, I have recently noticed many red spots on my hands and feet that are equal to or smaller than 1mm. Please refer to the following photos for assessment: https://www.dropbox.com/s/5zn0wjspf62g5ao/signal-2022-05-30-134737_002.jpeg?dl=0 https://...
Dr. Wu Yuxin Reply:
I apologize, but current medical regulations prohibit online diagnoses in this manner. If it is inconvenient to visit a hospital or clinic due to the pandemic, you may consult a dermatology clinic that offers telemedicine services, which can provide care in accordance with regula...[Read More] Understanding Red Spots on Hands and Feet: Cherry Angioma Insights