Understanding Scabies: Persistent Bumps on the Scrotum Explained
There are small lumps appearing on the testicles? My family and I were treated for scabies on May 18. A week later, during a follow-up visit, the doctor said we were cured. However, after about one or two weeks, my husband developed a new bump on his testicle. He applied some oin...
Dr. Li Yufen Reply:
Hello: It is recommended that the patient return for a follow-up appointment to confirm whether the lesions on the testicles are a recurrence of scabies. If it is a recurrence of scabies, then complete treatment is necessary, and the home environment should also be cleaned. Thank...[Read More] Understanding Scabies: Persistent Bumps on the Scrotum Explained
Understanding Nail Fungus and Athlete's Foot: Treatment and Side Effects
Onychomycosis, athlete's foot? Hello Dr. Lee, I started taking Fungitech on May 7 and continued for four weeks, stopping on June 4 due to my follow-up appointment being over a month away, which prevented me from obtaining a refill. Three days after stopping the medication (...
Dr. Li Yufen Reply:
Hello: The guidelines for the use of Fungitech tablets in the treatment of onychomycosis (fungal nail infection) under Taiwan's National Health Insurance are as follows: It is indicated for cases of tinea unguium affecting fingernails and toenails. The recommended dosage is ...[Read More] Understanding Nail Fungus and Athlete's Foot: Treatment and Side Effects
Understanding and Treating Winter-Triggered Cholinergic Urticaria
How should it be treated? Hello, doctor! I have been experiencing this symptom for several years, and it only occurs in winter. After eating hot foods, such as noodle soup or hot soup, I feel a prickling itch on my back that lasts about 5 minutes before easing off. There are no v...
Dr. Wu Yuxin Reply:
It is indeed likely cholinergic urticaria. Dermatologists can help you with treatment, but whether aggressive treatment is necessary depends on the severity and frequency of the episodes, so it should be discussed during your appointment. The primary treatment generally involves ...[Read More] Understanding and Treating Winter-Triggered Cholinergic Urticaria
Understanding Itchy and Painful Skin Rashes: When to See a Dermatologist
Itching and pain of the skin? Hello, Doctor: Ever since I moved to a new environment, I started developing red rashes in the area between my two hands shortly after. At first, it was very itchy, so I applied some topical cream, hoping it would improve. My family suggested it migh...
Dr. Wu Yuxin Reply:
Are you referring to stitches? If so, I recommend that you seek medical attention promptly to rule out the possibility of scabies.[Read More] Understanding Itchy and Painful Skin Rashes: When to See a Dermatologist
Could It Be Scabies? Understanding Itchy Skin After Hot Showers
Scabies Taking a hot shower suddenly can sometimes cause itching on the back, especially if there are no accompanying rashes. This is unlikely to be scabies, which typically presents with a rash and is caused by a mite infestation. The itching could be due to dry skin, irritation...
Dr. Li Yufen Reply:
Taking hot showers during the autumn and winter seasons can lead to excessive dryness and itching of the skin. Generally, scabies is caused by contact with an infestation of scabies mites, which can result in lesions all over the body. Thank you![Read More] Could It Be Scabies? Understanding Itchy Skin After Hot Showers
Understanding Scabies: When Does the Itching Start and How Long Does It Last?
Scabies If someone contracts scabies, does the itching persist continuously? Does the itching start immediately after getting scabies, or does it take some time before it begins?
Dr. Wu Yuxin Reply:
There is usually an incubation period of 2 to 4 weeks, and itching begins only after the rash appears.[Read More] Understanding Scabies: When Does the Itching Start and How Long Does It Last?
Can You Swim with Skin Allergies? Expert Advice on Water Activities
Skin allergy when playing in water? Hello Doctor: Recently, I have been experiencing allergic reactions, with a more severe rash on the top of my foot. I have been applying corticosteroids, but it still itches, and I have developed some wounds from scratching. Since I might be go...
Dr. Wu Yuxin Reply:
It is highly likely to worsen due to the irritation from sun exposure and salt from seawater.[Read More] Can You Swim with Skin Allergies? Expert Advice on Water Activities
Understanding STD Transmission: Direct and Indirect Pathways Explained
Routes of sexually transmitted infection (STI) transmission? Hello Dr. Wu: May I ask you what the exact transmission routes of sexually transmitted infections (STIs) are? I have heard that they can be transmitted through public restrooms or other indirect methods, which sometimes...
Dr. Wu Yuxin Reply:
The transmission route for sexually transmitted infections (STIs) is through sexual intercourse; otherwise, they wouldn't be called STIs. A small number can be transmitted through blood, such as sharing needles or blood transfusions. Public restrooms, dermatology clinic tras...[Read More] Understanding STD Transmission: Direct and Indirect Pathways Explained
Could It Be Shingles? Understanding Skin Rashes and Symptoms
Could it be shingles??? Hello, doctor. Three days ago, I noticed two red rashes at the junction of my thigh and buttocks (one is about 1cm x 0.6cm, and the other is about 2cm x 0.3cm). I have been applying a corticosteroid ointment six to seven times a day, but it hasn't bee...
Dr. Wu Yuxin Reply:
1. No lesions were observed, making it impossible to determine whether it is herpes zoster or another issue. 2. If a diagnosis has not yet been confirmed, it is not advisable to continue using corticosteroid ointments. 3. If there are any concerns, one should seek medical att...[Read More] Could It Be Shingles? Understanding Skin Rashes and Symptoms
Understanding Recurring Red Rashes: Eczema vs. Dermatitis Explained
Red rash Hello Doctor, I have developed a rash on one of my feet that looks like small red bumps (similar to acne) and it has been present for a month. I visited a clinic and the family physician diagnosed it as atopic dermatitis. I was prescribed a topical ointment called &quo...
Dr. Wu Yuxin Reply:
Recurrent skin diseases are quite common. For example, if a person has athlete's foot and gets treated but fails to adopt proper hygiene habits—such as wearing shoes all day and not washing their feet properly at home—they may experience a recurrence of athlete's foot a...[Read More] Understanding Recurring Red Rashes: Eczema vs. Dermatitis Explained
Common Skin Issues: Seasonal Allergies and Facial Bumps Explained
Skin issues I apologize, but I have a few questions for Dr. Wu: 1. For the past three years, every spring and summer during the changing seasons, my skin starts to itch and then develops rashes. I have previously seen doctors, but it doesn't seem to help much. 2. I have smal...
Dr. Wu Yuxin Reply:
During seasonal transitions, the skin is more prone to eczema. It is advisable to start using body lotion for skincare and see if the condition improves. As for the small white bumps that appear below the corners of the eyes, a proper examination is necessary for diagnosis, and i...[Read More] Common Skin Issues: Seasonal Allergies and Facial Bumps Explained
Comparing Clolux and BG: Efficacy and Side Effects for Skin Conditions
Topical dermatological medications Hello Dr. Lee: I have developed small red rashes on my thigh. I first visited Dr. A at a dermatology clinic, who prescribed Clobetasol (Clolux). Then I went to a second dermatology clinic and saw Dr. B, who prescribed Betamethasone Gel (BG). Are...
Dr. Li Yufen Reply:
Hello: 1. Clolux belongs to the category of topical corticosteroids, and BG does not have a drug name, making it impossible to determine its composition. 2. Long-term application of topical corticosteroids may lead to side effects such as skin thinning, increased hair growth, and...[Read More] Comparing Clolux and BG: Efficacy and Side Effects for Skin Conditions
Understanding Red Spots on Skin: Possible Causes and Concerns
Red spots resembling blood clots? Hello, doctor. I apologize for interrupting you during your busy schedule, but I would like to ask a question: My father ate pumpkin and pork rice noodles last Sunday, and the next day he developed bright red spots all over his legs (which look l...
Dr. Lin Xinpeng Reply:
Hello: Based on your description, the red rash on both lower limbs appears slightly raised and resembles petechiae. This skin manifestation is more consistent with vasculitis. Generally, vasculitis is not related to food; it is mostly triggered by infections or autoimmune disease...[Read More] Understanding Red Spots on Skin: Possible Causes and Concerns
Understanding Scabies: Symptoms, Diagnosis, and Contagion Concerns
Regarding scabies? Hello Dr. Lee, recently my husband and I have developed red rashes about the size of mung beans on the inner and outer sides of our arms, the inner thighs, and the front and back of our knees. We have seen different doctors, and they all suspect scabies and pre...
Dr. Li Yufen Reply:
Hello: The typical skin rash of scabies can be identified by its appearance. If a diagnosis is needed, it may be necessary to visit a dermatology department at a major hospital, where a microscopic examination of skin scrapings can confirm the presence of scabies mites. Generally...[Read More] Understanding Scabies: Symptoms, Diagnosis, and Contagion Concerns
Understanding Urticaria Treatment: When to Seek Further Medical Help
Treatment of urticaria Hello, I have been experiencing urticaria for a week and sought medical attention, starting antihistamine treatment. It has now been two weeks of treatment, and during this time, I still develop rashes on my body, but they are not very itchy. Does this indi...
Dr. Li Yufen Reply:
Hello: During the treatment period, the body may still develop rashes that are not very itchy, indicating that the treatment is not yet complete. It is recommended to return for follow-up and continued treatment. Thank you![Read More] Understanding Urticaria Treatment: When to Seek Further Medical Help
Understanding A Acid Dermatitis: Symptoms, Causes, and Recovery Time
A acid dermatitis???? Hello, doctor. I previously used tretinoin, and after taking a hot shower and applying skincare products, I noticed that my skin became very red. Is this tretinoin dermatitis? However, I didn't experience this before; it makes my skin look like erythema...
Dr. Li Yufen Reply:
Hello: It is recommended that you bring a topical retinoid cream and consult a dermatologist to confirm whether the dermatitis is caused by the retinoid or by other skincare products leading to contact dermatitis, or if you are concerned about lupus erythematosus (butterfly rash)...[Read More] Understanding A Acid Dermatitis: Symptoms, Causes, and Recovery Time
Understanding Prolonged Pityriasis Rosea: Symptoms, Diagnosis, and Treatment
Pityriasis rosea has lasted for 3 months? In December 2012, symmetrical red rashes appeared, and a visit to the clinic resulted in a diagnosis of Pityriasis Rosea. After a month of treatment (antihistamines and topical ointments), new rashes continued to emerge. The physician rec...
Dr. Wu Yuxin Reply:
Based on your description, it is indeed likely to be pityriasis rosea. Most sources indicate a duration of 6 to 8 weeks, but there are cases that persist for more than six months. Chronic pityriasis lichenoides (pityriasis lichenoides chronica) should also be considered, as it ma...[Read More] Understanding Prolonged Pityriasis Rosea: Symptoms, Diagnosis, and Treatment
Understanding Eczema vs. Psoriasis: Which Specialist to Consult?
Rheumatology and Immunology Eczema is not the same as psoriasis; they are distinct skin conditions. If you are experiencing red rashes on the front of your lower legs and itchy, flaky rashes on the lower edge of your chest, it is important to seek appropriate medical care. Given ...
Dr. Lin Xinpeng Reply:
Hello: Eczema is a type of dermatitis, and it is important to rule out infections caused by bacteria or fungi. Psoriasis, commonly known as "plaque psoriasis," is a skin condition caused by an imbalance in the immune system. The two conditions are completely different, ...[Read More] Understanding Eczema vs. Psoriasis: Which Specialist to Consult?
Understanding Persistent Skin Rashes: Causes and Concerns
The rash that hasn't shrunk? Moreover, that rash seems to have a subtle pain associated with it, or is it still there? A while ago, I felt a slight pain in a certain area, but I couldn't identify the source of the pain. Just now, after sitting for a long time and adjust...
Dr. Lin Wanrong Reply:
Hello Leoujane: It is recommended that you seek a qualified dermatologist for a diagnosis to identify the issue before pursuing further treatment. PS: Since Dr. Lin Wan-rong has left, this question is answered by Dr. Jiang Zhe-en from the dermatology department.[Read More] Understanding Persistent Skin Rashes: Causes and Concerns
Understanding Itchy Red Spots: Causes and Treatments for Skin Issues
There are small red spots on the body that are itchy? Doctor, I have some small red spots on my body that are itchy, but not unbearably so. Initially, they were only on the inner thighs, but now I also have some on my hands and body. About a month ago, I rode a bicycle, and I tho...
Dr. Yang Zhiya Reply:
Hello, there are many skin diseases that can cause itching, and it is not possible to diagnose them based solely on description. It is recommended to visit a dermatologist for a proper examination and treatment by a physician. Thank you![Read More] Understanding Itchy Red Spots: Causes and Treatments for Skin Issues