Dr. Li Yufen reply Dermatology Question - Page 19

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Dealing with Raised Dark Spots on Skin: Causes and Solutions

[There are raised black spots on both hands and feet.] I have been troubled for several years by small, round, slightly raised black spots that feel a bit bumpy. What methods are available to address this issue? I appreciate the hard work of the doctors in answering my questions.


Dr. Li Yufen reply Dermatology
Hello: It is not possible to diagnose skin diseases based solely on a textual description. If the skin lesions do not improve or worsen, it is advisable to consult a nearby dermatologist for a diagnosis. A definitive diagnosis is necessary to determine the appropriate treatment m...

[Read More] Dealing with Raised Dark Spots on Skin: Causes and Solutions


Understanding Eyebrow Hair Removal: Effects on Growth and Skin Health

Please consult a physician regarding eyebrow plucking and related questions? Hello, Doctor. I would like to ask the following questions regarding the removal of eyebrow hair from the upper eyelid using tweezers: 1. Over time, will this method cause the hair follicles in that ar...


Dr. Li Yufen reply Dermatology
Hello: 1. Frequent hair removal may damage hair follicles, potentially affecting hair growth. 2. If the skin around the eyes is subjected to prolonged pulling, it may become more lax. 3. The hair growth cycle is theoretically fixed, but it varies by individual constitution; shavi...

[Read More] Understanding Eyebrow Hair Removal: Effects on Growth and Skin Health


Understanding Prolonged Breakouts While Using Topical Retinoids

Topical retinoid exacerbation phase Hello, Doctor. I stopped taking oral contraceptives after five to six years, and my skin condition has become quite unstable. I did some research online and learned about the effects of retinoids (A acid) for treating acne and anti-aging, so I ...


Dr. Li Yufen reply Dermatology
Hello: For a detailed introduction to topical retinoids, you can refer to the article from Med's Good Friends at https://www.medpartner.club/topical-retinoids-introduction/. If the skin lesions do not improve or worsen, it is recommended to consult a nearby dermatologist for...

[Read More] Understanding Prolonged Breakouts While Using Topical Retinoids


Balancing Sunscreen Use and Bone Health: How Much Sun Do You Need?

The impact of sunscreen on bone health? I have been very diligent about sun protection, and since I hardly get any sun exposure, I am concerned about aging and developing dark spots. However, I am also worried about osteoporosis, so I am considering not applying sunscreen and get...


Dr. Li Yufen reply Dermatology
Hello: For a detailed introduction to sunscreen and vitamin D, you can refer to the article from Med's Good Friend at https://www.medpartner.club/sunscreen-vitamin-d-deficiency-myth/. Here are the key points: 1. Sunscreens may indeed reduce the synthesis of vitamin D in the...

[Read More] Balancing Sunscreen Use and Bone Health: How Much Sun Do You Need?


Understanding Unidentified Bumps on the Foreskin: What You Need to Know

Prepuce issues - Unidentified protrusions on the foreskin? Hello, doctor. Three days ago, I noticed a protrusion on the side of my penis, on the foreskin. It feels somewhat hard and is quite large, approximately 1 centimeter in size. It is attached to the foreskin, not growing on...


Dr. Li Yufen reply Dermatology
Hello: It is not possible to accurately diagnose a skin condition based solely on a textual description. If the hard lump developed suddenly within a few days, there is a higher likelihood of it being an inflammatory lesion. If the skin symptoms do not improve or worsen, it is ad...

[Read More] Understanding Unidentified Bumps on the Foreskin: What You Need to Know


Understanding Skin Sarcomas: Symptoms, Growth, and Treatment Options

The issue of sarcoma? Dear Dr. Lee: I have a growth in the area near my left pubic bone that resembles a skin lesion. It is about one centimeter in diameter and has three small black dots arranged horizontally on top. It does not hurt when pressed, and it occasionally itches very...


Dr. Li Yufen reply Dermatology
Hello: It is not possible to diagnose skin diseases based solely on a textual description. If the skin lesions do not improve or worsen, it is recommended to consult a nearby dermatologist for diagnosis and treatment. Thank you!

[Read More] Understanding Skin Sarcomas: Symptoms, Growth, and Treatment Options


Understanding Pimples in Pubic Hair: When to See a Dermatologist or Urologist

Pimples developing in the hair follicles above the genital area? Recently, I noticed a bump in the hair area above my genitals. At first, it didn't feel like much, but later it started to itch. When I touched it, it was painful at first, but now there's almost no pain, ...


Dr. Li Yufen reply Dermatology
Hello: Based solely on the textual description, it is not possible to accurately diagnose a skin condition. If the painful lesions resemble acne, the most common diagnosis is folliculitis. Simple herpes usually presents as small clusters of vesicles. If the skin symptoms do not i...

[Read More] Understanding Pimples in Pubic Hair: When to See a Dermatologist or Urologist


Understanding Lip Bumps in Children: When to Seek Medical Advice

Lip issues Dear Doctor, my child is 3 years old and has a small, raised bump on the upper left edge of his upper lip. It is not usually noticeable, but becomes quite prominent when he smiles or opens his mouth, roughly the size of half a green bean. It is not painful or itchy, an...


Dr. Li Yufen reply Dermatology
Hello: Based solely on the textual description, it is not possible to accurately diagnose a skin condition. "It is usually not noticeable, but becomes very prominent when smiling or opening the mouth, appearing as a raised lump." It feels like a subcutaneous tumor. If i...

[Read More] Understanding Lip Bumps in Children: When to Seek Medical Advice


Does Using Vaseline on Your Scalp Cause Hair Loss?

Does using petroleum jelly on the scalp cause hair loss? Hello doctor, my scalp is very dry, and I notice that small flakes of dandruff keep falling shortly after I wash my hair. If I want to prevent moisture loss, is it safe to use petroleum jelly long-term? I'm worried tha...


Dr. Li Yufen reply Dermatology
Hello: Some dandruff issues are related to seborrheic dermatitis of the scalp. For a detailed introduction to seborrheic dermatitis, you can refer to the article on the Dermatology Expert Health Network at http://www.drskincare.com.tw/Qa/Detail.aspx?ID=23. For dry scalp, since pe...

[Read More] Does Using Vaseline on Your Scalp Cause Hair Loss?


Relief Strategies for Persistent Itchy Hives from Mosquito Bites

Papular urticaria Experiencing widespread itching due to mosquito bites for over two weeks can be quite uncomfortable. Here are some methods to alleviate the symptoms: 1. **Topical Corticosteroids**: Over-the-counter hydrocortisone cream can help reduce inflammation and itching....


Dr. Li Yufen reply Dermatology
Hello: If convenient, you can purchase ointments for treating eczema or itching at a nearby pharmacy, or lotions/creams/repair creams designed for patients with atopic dermatitis that have restorative effects. Additionally, you can use cold compresses or ice packs to relieve itch...

[Read More] Relief Strategies for Persistent Itchy Hives from Mosquito Bites


Can My Nail Grow Back After a Car Door Injury? Tips for Recovery

On New Year's Eve, my thumb got caught in the car door? On New Year's Eve, my thumb got caught in a car door. At the moment the door closed, my hand had already pulled back, but my right thumb was bleeding. I immediately applied ice and went to the hospital to see a doc...


Dr. Li Yufen reply Dermatology
Hello: As long as the nail matrix is not injured, new nails should gradually grow back. You may want to keep track of when you trim your nails. If the nail bed is also moving, you might consider using breathable tape or a bandage to secure it and reduce movement. Maintaining a ba...

[Read More] Can My Nail Grow Back After a Car Door Injury? Tips for Recovery


Understanding Itchy Skin and Blood Marks: Causes and Solutions

Scratching leads to blood marks? I've been experiencing frequent itching these past few days, especially at night while sleeping. When I scratch, it leaves marks that resemble those from gua sha, but they fade away after a few hours. I haven't been scratching hard, and ...


Dr. Li Yufen reply Dermatology
Hello: If there is redness and swelling that resembles a mosquito bite after scratching the skin, and it completely disappears within a few hours, it is more similar to urticaria (hives). Recently, with the changing weather, many people are experiencing skin allergies and itching...

[Read More] Understanding Itchy Skin and Blood Marks: Causes and Solutions


Understanding Redness and Swelling in the Palm: Possible Causes

Redness and swelling of the palm? In the past few days, I suddenly noticed some pain in the hypothenar region of my right hand while using the mouse. Upon lifting my hand, I saw a small red swollen area that looks like a blister but is not raised. It doesn't hurt when touche...


Dr. Li Yufen reply Dermatology
Hello: A diagnosis of skin diseases cannot be made solely based on a textual description. If you have photos, you can provide a link to an online album for reference. However, if the skin lesions do not improve or worsen, it is advisable to consult a nearby dermatologist for diag...

[Read More] Understanding Redness and Swelling in the Palm: Possible Causes


Long-Term Antihistamine Use for Chronic Urticaria: Do You Need Regular Check-Ups?

Long-term medication issues in chronic urticaria? Hello Doctor: I have a history of chronic urticaria for 15 years. Initially, it was mild and manageable without medication, but during severe flare-ups, I would take medication as needed. However, in the past 5 to 6 years, I have ...


Dr. Li Yufen reply Dermatology
Hello: For a detailed introduction to antihistamines, you can refer to https://www.medpartner.club/anti-histamine-drug/ and https://b303094004.pixnet.net/blog/post/106323332. Generally, antihistamine medications do not affect liver or kidney function. It is recommended that you d...

[Read More] Long-Term Antihistamine Use for Chronic Urticaria: Do You Need Regular Check-Ups?


Causes and Solutions for Pain Under the Little Toe Nail

The skin around the little toe nail is painful? Hello Dr. Lee, may I ask what could be the reason for the pain in the flesh under my little toe nail? It hurts even when I wear wider shoes, and it also hurts when I'm not wearing shoes and nothing is pressing on it. Should I s...


Dr. Li Yufen reply Dermatology
Hello: A diagnosis of skin disease cannot be made solely based on a textual description. It is important to consider whether there has been any external trauma, whether ill-fitting or narrow-toed shoes have been worn, or if activities that repeatedly impact the toes, such as mara...

[Read More] Causes and Solutions for Pain Under the Little Toe Nail


Understanding Cryotherapy for Viral Warts: What to Expect After Treatment

Cryotherapy Today, I visited a dermatology clinic, and the doctor informed me that I have a viral wart on the back of my head. They performed cryotherapy on it, and I currently have the following questions: 1. Shortly after the procedure, it developed into a blister, and I'm...


Dr. Li Yufen reply Dermatology
Hello: 1. Acne ointments can be either exfoliating or anti-inflammatory and antibacterial. If you are unsure which type of ointment you have, if it is an anti-inflammatory and antibacterial ointment containing antibiotics, it can be applied to wounds from broken blisters. 2. Whet...

[Read More] Understanding Cryotherapy for Viral Warts: What to Expect After Treatment


Understanding Back Acne: Causes and Effective Treatments

Skin issues? I have acne and dark spots on my back. I want to know what I should use to treat it and why it is happening!


Dr. Li Yufen reply Dermatology
Hello: It is not possible to diagnose skin diseases solely based on a textual description. If the black spots are related to acne, they may be clogged comedones or post-inflammatory hyperpigmentation. For more information about acne, you can refer to the detailed introduction on ...

[Read More] Understanding Back Acne: Causes and Effective Treatments


Understanding Excessive Foot Sweat: Causes and Solutions

Excessive sweating on the soles of the feet? Excessive sweating on the soles of the feet and hands, often accompanied by odor, may indicate a condition known as hyperhidrosis. This can be caused by various factors, including genetic predisposition, hormonal changes, or underlying...


Dr. Li Yufen reply Dermatology
Hello: For an introduction to hyperhidrosis, you can refer to Dr. Su Chen-Hsing's article at http://web.csh.org.tw/web/222010/?p=2677. If the symptoms do not improve or worsen, it is recommended to consult a nearby dermatologist for diagnosis and treatment at http://www.derm...

[Read More] Understanding Excessive Foot Sweat: Causes and Solutions


Managing Plantar Warts: Post-Cryotherapy Care and Common Concerns

Treatment for plantar warts may involve cryotherapy, which can lead to the formation of blisters. After the procedure, proper aftercare is essential. Here are some recommended aftercare methods: 1. **Keep the area clean and dry**: Gently wash the treated area with mild soap and ...


Dr. Li Yufen reply Dermatology
Hello: Regarding the causes and treatment of viral warts, you can refer to the detailed introduction on the Dermatology Expert Health Network at http://www.drskincare.com.tw/Qa/Detail.aspx?ID=521. If the blister is large and painful, you can return to the clinic for the physician...

[Read More] Managing Plantar Warts: Post-Cryotherapy Care and Common Concerns


Understanding Scab Formation on Skin: Causes and Concerns

Multiple scabs In the past month, I have noticed multiple small scabs on my right leg, appearing in various spots, while my left leg has very few scabs. I don't recall scratching my skin. I recently adopted a cat. Could you please explain why this is happening?


Dr. Li Yufen reply Dermatology
Hello: It is not possible to diagnose skin diseases based solely on a textual description. Due to recent significant climate changes, you may try applying a moisturizing lotion locally for care. If the skin lesions do not improve or worsen, it is advisable to consult a nearby der...

[Read More] Understanding Scab Formation on Skin: Causes and Concerns


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