Rash, Dermatology FAQ - Page 20

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Understanding Bedsores: Causes, Treatments, and Skin Care Tips

Mustard gas issues My father-in-law, who has been bedridden for a long time, has been experiencing issues with pressure ulcers. He has been applying medicated ointment and taking sulfur baths. Recently, the red rash has turned black, and we are unsure what this means. Could this ...


Dr. Huang Ruiyun Reply:
Hello: The red rash turning black indicates that the scabies mites have died, signifying successful treatment, leaving behind dark marks. The main concern with long-term use of scabicide medications is the excessive irritation of the skin leading to dermatitis, so long-term use i...

[Read More] Understanding Bedsores: Causes, Treatments, and Skin Care Tips


Understanding Itchy Skin: When to See a Dermatologist or Hepatologist

If you are experiencing itching in unspecified areas of the body, you should consult a dermatologist? In the past year, I have visited several dermatologists and traditional Chinese medicine practitioners. The dermatologist diagnosed me with allergic eczema and prescribed topical...


Dr. Huang Ruiyun Reply:
Hello: Based on your description, it seems like urticaria; however, a clinical physician's firsthand observation should be more accurate. The prerequisite is that you must see a qualified dermatologist, and you should inform them that "the symptoms disappear after a few...

[Read More] Understanding Itchy Skin: When to See a Dermatologist or Hepatologist


Understanding Itchy Skin: Causes and Solutions for Persistent Rashes

The skin may itch? Hello, professional doctor: My skin often has a small area that itches, and after that area itches, it moves to another location (this happens approximately every few months). It started on my foot, then moved to my waist, and finally to my neck. Each time I sc...


Dr. Huang Ruiyun Reply:
Hello: One of the agreements that consulting physicians on this website must follow is that consultations are limited to medical inquiries only; they do not provide diagnoses or prescribe medications. If a consultation is needed, patients are advised to visit a hospital. Therefor...

[Read More] Understanding Itchy Skin: Causes and Solutions for Persistent Rashes


Understanding Skin Itching: Causes and Remedies for Fast-Food Workers

Skin itching Hello, I work at a fast food restaurant, and the kitchen can be quite hot and humid due to the fryers and other equipment. Sometimes, I suddenly feel a prickly and itchy sensation on my skin (there are small red spots that later disappear). What could be causing this...


Dr. Guo Fengsheng Reply:
It is likely that the heat caused the heat rash; staying cool or frequently changing clothes is a good recommendation.

[Read More] Understanding Skin Itching: Causes and Remedies for Fast-Food Workers


Distinguishing HIV Rash from Common Skin Conditions: A Dermatologist's Insight

Red spots on the body? Hello, Dr. Huang. There was a news report about a male college student who developed a rash all over his body and went to see a dermatologist. Further blood tests revealed that he had contracted HIV. Can the rash associated with HIV symptoms be visually dis...


Dr. Huang Ruiyun Reply:
Hello: Ultimately, an HIV diagnosis can only be confirmed through a blood test. Some carriers may be completely asymptomatic. Instead of living in constant worry and suspicion, it is better to be straightforward and go to the hospital to request an HIV test. Based on professional...

[Read More] Distinguishing HIV Rash from Common Skin Conditions: A Dermatologist's Insight


Understanding Red Spots on Infants' Eyelids: Causes and Solutions

Red spots on the eyelid? A two-month-old infant has developed a red patch on the eyelid that resembles a rash but is not quite the same. Initially, it would disappear quickly, but now it has not only persisted but is also getting larger. The eye itself is not swollen. I would lik...


Dr. Huang Ruiyun Reply:
Hello: I'm sorry, but it is not possible to diagnose diseases online. Please take your baby to see a pediatrician or a dermatologist in person, or you can consult the doctor during a children's health check-up or vaccination. Wishing you safety.

[Read More] Understanding Red Spots on Infants' Eyelids: Causes and Solutions


Post-Shingles Treatment: Understanding Confusion and Hallucinations in Elderly Patients

After treatment for herpes zoster, there were instances of nonsensical speech? Hello, Doctor Huang! My mother-in-law is in her eighties and, due to excessive stress and prolonged fatigue, developed herpes zoster three weeks ago (she has never had it before) and has experienced ab...


Dr. Huang Ruiyun Reply:
Hello: The tasks to be done are: 1. Discontinue the medications given for the treatment of shingles and <a href="https://adoctor.tw/article/30129">#30129</a>; rash. 2. Refer the patient to a neurology outpatient clinic as soon as possible (preferably at the ...

[Read More] Post-Shingles Treatment: Understanding Confusion and Hallucinations in Elderly Patients


Understanding Drug Allergies: Symptoms, Duration, and Dietary Considerations

Suspected drug allergy Dr. Huang: On September 13, I experienced chills and took a cold medicine (a Japanese original product, Yaxinbao cold soft capsules) that I had never taken before. On the morning of September 14, I woke up to prepare for work and noticed itching on my body....


Dr. Huang Ruiyun Reply:
Hello: This is urticaria, which can have many possible causes, including medications and the common cold. The duration of the condition can vary, and it is unpredictable. It is recommended to currently take antihistamines to control the urticaria and maintain quality of life. Wis...

[Read More] Understanding Drug Allergies: Symptoms, Duration, and Dietary Considerations


Understanding Skin Pain After Bathing: Possible Causes and Solutions

Skin prickling? Hello, in the past week or two, whenever I take a shower or sit in the bathtub, the skin in the water becomes painful and this sensation lasts for about thirty minutes. I would like to know if this could be an allergy to water, as I have a history of nasal allergi...


Dr. Du Zhiqiang Reply:
Dear Xiaochang, Hello, there are many reasons for skin prickling. For individuals with nasal allergies, the most common issue is urticaria. You did not mention whether there are any rashes or sunburns. It is not appropriate to make a diagnosis based solely on descriptions; a con...

[Read More] Understanding Skin Pain After Bathing: Possible Causes and Solutions


Can Kids Use Adult Sunscreen? Dermatologist Insights for Summer Safety

Sunscreen usage Dr. Kuo: Is it safe for children to use the same sunscreen as adults during the hot summer days? Will it have any effects on their skin?


Dr. Guo Fengsheng Reply:
Generally, there is not much difference; adults and children can share it. However, if there are any allergic reactions or rashes, use should be discontinued.

[Read More] Can Kids Use Adult Sunscreen? Dermatologist Insights for Summer Safety


Can Sweat Blisters Be Contagious? Understanding Your Concerns

Worried about transmission? Dr. Du, may I ask if dyshidrotic eczema is contagious? Every summer, I get small blisters on my hands that are very itchy! I recently noticed that my daughter’s hands are also itchy, and I’m wondering if I transmitted it to her.


Dr. Du Zhiqiang Reply:
Hello, sweat rash is not contagious. Your daughter's itching hands may not necessarily be due to sweat rash. Living in Taiwan's subtropical climate, which is hot and humid, many people may experience this. Wishing you peace and health. Sincerely, Dr. Du Zhi-Liang, Direc...

[Read More] Can Sweat Blisters Be Contagious? Understanding Your Concerns


Effective Treatments for Acne and Itchy Rashes: A Dermatologist's Guide

What topical ointments can be used for acne? What topical ointments can be used for acne? My husband sweats a lot, and his buttocks are always covered with red rashes that are itchy. What could be the cause, and how should it be treated?


Dr. Huang Ruiyun Reply:
Hello: One of the agreements that consulting physicians on this website must follow is that consultations are limited to medical inquiries only; no diagnoses or prescriptions will be provided. If a consultation is needed, it is recommended that patients visit a hospital for treat...

[Read More] Effective Treatments for Acne and Itchy Rashes: A Dermatologist's Guide


Understanding Scabies: Treatment Challenges and Skin Care Tips

About scabies? Hello Dr. Du, I would like to ask about my prolonged scabies infection (which started around the end of February). I have seen multiple doctors, and they all diagnosed me with dyshidrotic eczema or dermatitis. It wasn't until I visited a different regional ho...


Dr. Du Zhiqiang Reply:
Dear Ms. Li, Regarding the diagnosis of scabies, severe cases are easy to identify and unlikely to be misdiagnosed, while mild cases are more challenging to diagnose. A severe case is defined as one where family members or housemates are already infected, or the individual exper...

[Read More] Understanding Scabies: Treatment Challenges and Skin Care Tips


Understanding Red Rash After Beach Visits: Causes and Solutions

Red rashes on the skin? Hello Doctor: Yesterday I went to the beach, and after returning home, I started developing red rashes on my body in the evening. They appeared on my hands, feet, and back. In some areas, there is only one spot, while in others, there are several. Sometime...


Dr. Huang Ruiyun Reply:
Hello: I apologize, but according to regulations, I cannot diagnose a disease without having seen the patient in person. If you are truly troubled, please seek medical attention in person. Wishing you peace of mind.

[Read More] Understanding Red Rash After Beach Visits: Causes and Solutions


Understanding Red Spots on Skin: Causes and Concerns

Skin issues I'm sorry, doctor, but sometimes when I get bitten by mosquitoes on my arm and scratch it, I notice small red spots appearing. I'm not sure if it's because I'm scratching too hard or what, but sometimes after scratching, these spots don't appe...


Dr. Mao Mingya Reply:
Hello: Based on your description, it is possible that you are experiencing either petechiae or dermatitis, both of which can present as red pinpoint spots. If you are scratching too hard, it may cause petechiae. The rash associated with dermatitis is eczema rather than bleeding. ...

[Read More] Understanding Red Spots on Skin: Causes and Concerns


Understanding Small Blisters on Fingers: When to See a Doctor

Small blisters on the hand? Hello Dr. Du, I have recently developed many small blisters on my fingers. I'm not sure if I should see a doctor, if they will go away on their own, or if I can just pop them. I'm also curious about what might be causing these small blisters....


Dr. Du Zhiqiang Reply:
Dear Joan: The small blisters on your fingers may be caused by the recent humid and unstable weather or excessive hand washing related to your work, which can lead to what is known as "sweat rash." It is advisable to consult a doctor for examination, and it is not recom...

[Read More] Understanding Small Blisters on Fingers: When to See a Doctor


Understanding Eczema: Causes, Symptoms, and Effective Treatments

Eczema Hello, I would like to ask about eczema that is present all over my body. Recently, I caught a cold and developed a rash on my hands. Later, I had a scratch on my foot that was healing but has now turned into two small holes with itchy wounds that resemble eczema. The bigg...


Dr. Huang Ruiyun Reply:
Hello: I'm sorry, but prescriptions cannot be issued online. Please visit a dermatologist in person! (Medication is necessary.) Wishing you safety.

[Read More] Understanding Eczema: Causes, Symptoms, and Effective Treatments


Understanding Itchy Red Rashes on Arms and Thighs: Causes and Solutions

Could you please tell me about the appearance of a rash on the skin? Hello Doctor: I would like to ask about the red rashes that appear on my skin. They occur on my arms and thighs, and they are extremely itchy. They tend to worsen when I sweat excessively, especially in hot weat...


Dr. Huang Ruiyun Reply:
Hello: I apologize, but according to regulations, online consultations cannot replace an actual medical examination. This rule is reasonable and is in place to protect patients. If you are truly troubled, please visit a dermatologist in person. Wishing you safety.

[Read More] Understanding Itchy Red Rashes on Arms and Thighs: Causes and Solutions


Understanding and Managing Cholinergic Urticaria: Symptoms and Treatments

Cholinergic urticaria Hello Doctor, I am studying in the United States. Since December of this year, whenever I feel hot or my body temperature rises due to exercise, walking, running, or even drinking soup or coffee, or sitting in a car without air conditioning, my whole body st...


Dr. Mao Mingya Reply:
Hello: Based on your situation, cholinergic urticaria should indeed be the primary consideration. The main reason is that acetylcholine acts on mast cells, leading to the release of certain allergic substances. In some cases, the release of acetylcholine can increase due to facto...

[Read More] Understanding and Managing Cholinergic Urticaria: Symptoms and Treatments


Understanding Your Toddler's Widespread Skin Rash: Causes and Solutions

The baby has a rash all over their body? Hello Doctor: My baby is two and a half years old. Initially, there were pimple-like lesions (red and swollen with white pus) around the diaper area (near the scrotum). After applying medication, it improved, but then similar lesions appea...


Dr. Huang Ruiyun Reply:
Hello: I’m sorry, but according to regulations, online consultations cannot replace an actual medical examination and prescription. This rule is reasonable and is in place to protect patients. Please refrain from searching for medical conditions online, as it is not only unhelpfu...

[Read More] Understanding Your Toddler's Widespread Skin Rash: Causes and Solutions


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