Hyperpigmentation, Dermatology FAQ

How to Treat Red Acne Scars and Prevent Future Breakouts

Red scars left by acne on the face? Hello Doctor: Every time I get acne, I am left with red spots that feel a bit hard and do not go away. I haven't picked at them; why does this happen? Also, what methods can I use to eliminate scars on my face? Thank you for your response.

Dr. Zheng Lizhen Reply:
Hello! Acne scars can be classified into "true scars" (atrophic or hypertrophic scars) and "false scars" (erythema or hyperpigmentation). True scars, particularly atrophic scars, can be treated with dermabrasion, with laser resurfacing being the most common me...

Understanding Hyperpigmentation: Causes and Treatment Options

Melanin? I would like to ask the doctor about the dark pigmentation I found on both sides of my groin. Is it melanin? How is this dark pigmentation formed? How can I improve it? I want to restore it to my original skin color. However, I have heard that exfoliation is necessary to...

Dr. Zheng Lizhen Reply:
Hello: Please visit a dermatology specialty clinic for an accurate diagnosis and treatment. Sincerely, Dr. Cheng Li-Chen, Dermatology.

Understanding Dark Scars on the Skin: Causes and Treatment Options

Skin diseases Hello, doctor: One year ago, Xiao Xie had a red rash on the inner thigh that turned into a black scar after scratching. What could this situation be? Is it difficult to treat? Thank you.

Dr. Huang Ruiyun Reply:
This is post-inflammatory hyperpigmentation, which does not require treatment, but the fading process is very slow. As long as the localized area is no longer experiencing dermatitis, it is acceptable.

Understanding Mole Removal: Healing, Concerns, and Skin Reactions

Mole removal Hello Dr. Huang, I have a few questions for you: 1. I underwent carbon dioxide laser treatment for a mole on January 9th, and it has been over a month since then. Currently, there is a depression and redness at the wound site. I am still applying artificial skin; i...

Dr. Huang Ruiyun Reply:
1.2. I apologize for not being able to see you in person, which prevents me from making an accurate assessment. 3. Hyperpigmentation may take 3 to 12 months to fade. Please pay attention to sun protection, and it would be more effective to obtain a depigmenting cream from a derma...

Persistent Redness After Laser Treatment: Causes and Solutions

Persistent erythema I have a large acne scar on my left cheek. Originally a light brown color, the scar turned pink after undergoing laser treatment last year. The doctor mentioned it would take three to six months to fade, but it has been almost eight months now, and the erythem...

Dr. Zheng Lizhen Reply:
Hello: Please visit the dermatology outpatient clinic to understand the actual condition. Sincerely, Dr. Cheng Li-Chen, Dermatology.

Dealing with Acne: Safe Treatments for Sensitive Facial Areas

Skin... acne Dr. Huang, I have developed some pimples in the area below my nostrils and above my lips, as well as on my beard area over the past two days. They seem to be in the early stages, appearing red, raised, and painful when pressed. Can I apply the topical medication pres...

Dr. Huang Ruiyun Reply:
Clindamycin and Pana 5 can both be used and can be alternated. You can stop using them once the skin has flattened. Scars, moles, and hyperpigmentation are not related to these two medications; you are overthinking it.

Effectiveness of AHA Peels for Acne Scars: Recommendations in Yunlin

Acne scars Hello doctor, I would like to ask if the glycolic acid peeling combination and the youth skin care combination from Neostrata available on the market are effective for acne and acne scars? Also, is glycolic acid peeling effective? Could you recommend a good and safe de...

Dr. Zheng Lizhen Reply:
Hello: For acne and hyperpigmentation scars, alpha hydroxy acid (AHA) peels are effective. The dermatology clinics in Yunlin County include: Hsin Rong Dermatology Clinic, located at No. 86, Ren'ai Road, Huwei Township, Yunlin County; Cai Dermatology Clinic, phone number 0553...

Effective Solutions for Persistent Hyperpigmentation Around the Mouth

Please provide the content you would like me to translate. Thank you! Hello, I have had hyperpigmentation at the corners of my mouth for many years. I previously consulted a dermatologist who mentioned it might be post-inflammatory hyperpigmentation. They prescribed me kojic acid...

Dr. Zheng Lizhen Reply:
Hello: Generally, it is necessary to evaluate after one month of use. Sincerely, Dr. Cheng Li-Chen, Dermatologist.

Effective Solutions for Dark Marks After Angular Cheilitis

Angular cheilitis Doctor: Hello! I had angular cheilitis 2 to 3 times a year ago. After treating it with white vinegar, it recurred again. However, now I have a problem that is very troubling to me. There are dark marks on both sides of my mouth. They look quite unsightly. The wo...

Dr. Huang Ruiyun Reply:
Post-inflammatory hyperpigmentation on the face typically fades naturally within three to twelve months after the inflammation has resolved. It is essential to apply sunscreen daily to the pigmented areas. If the fading is still slow, you may consider visiting a dermatologist.

Understanding Dark Spots on the Penis: Causes and Concerns

Black The appearance of a small dark spot on the glans may be due to various reasons, including hyperpigmentation, a benign mole, or other skin conditions. It is important to note that such changes are not necessarily indicative of HIV or any sexually transmitted infection (STI)....

Dr. Chen Yiying Reply:
Hello: In response to your question... HIV does not manifest solely through pigmentation changes on the glans. You should consult a dermatologist for a proper diagnosis. However, you are indeed in a high-risk group for HIV, so please practice safe sex and consider getting tested ...

Understanding Skin Color Changes After Fungal Infections

Skin color after tinea infection? The physician would like to ask you about a fungal infection on the skin near the vagina that I had on my thigh. I have already seen a doctor and applied medication, but it has been over a month, and the skin color there still hasn't complet...

Dr. Huang Ruiyun Reply:
Individuals of Asian or other ethnic backgrounds often experience hyperpigmentation following skin injury or inflammation. This is merely a temporary uneven skin tone, which is quite common and not considered pathological. The duration can range from as short as three months to s...

How to Treat Dark Spots After Jock Itch: Expert Dermatologist Advice

Please ask your question! Doctor, I had tinea cruris a long time ago, and the symptoms have not recurred since then. However, I have noticed darker marks on both sides of my thigh and groin area. Is there any way to eliminate these marks?

Dr. Jiang Zheen Reply:
This is post-inflammatory hyperpigmentation, which can be difficult to fade. You might try applying a hydroquinone cream. Wishing you well.

How Soon After AHA Peels Can You Remove Skin Tags?

How long after a chemical peel can I have a mole removal? I had a chemical peel yesterday, and one of my acne spots has scabbed over today because I picked at it after the peel. It looks a bit dark... I'm worried it might turn into a mole. How long after the chemical peel ca...

Dr. Zheng Lizhen Reply:
Hello: After acne scabs over, it will not turn into a mole; at most, it may result in post-inflammatory hyperpigmentation. After about two weeks of using alpha hydroxy acids, you can start treating moles. Even for flat moles, the number of treatments required can only be determin...

Understanding Skin Issues: Painful Bumps and Acne Scars in the Groin Area

Skin problems I have noticed 2 to 3 raised bumps in my genital area, approximately 0.5 cm in size, which are very painful when pressed. Some of them feel itchy. I've had these since I was 15 years old. What could they be? Additionally, I have developed some bumps on my butto...

Dr. Chen Yiying Reply:
Hello: In response to your question, your description may indicate folliculitis. If the same lesion persists for a longer duration and varies in size, it could be an epidermoid cyst. Folliculitis on the buttocks is often caused by prolonged sitting in warm conditions, and it is n...

Effective Treatments for Raised Scars from Skin Mole Removal

Scar To address raised scars left by skin mole removal, consider the following options: 1. **Topical Treatments**: Use silicone gel sheets or silicone ointments to help flatten and soften the scar over time. 2. **Steroid Injections**: Corticosteroid injections can reduce inflam...

Dr. Zheng Lizhen Reply:
Hello! 1. Acne scars can be classified into "true scars" (atrophic or hypertrophic scars) and "false scars" (erythema or hyperpigmentation). True scars, particularly atrophic scars, can be treated with dermabrasion, with laser dermabrasion being the most com...

Effective Treatments for Acne Scars and Pits: Expert Advice

Could you please provide more details about your questions regarding acne scars and indentations? How should I treat acne scars and indentations? I have previously asked other dermatologists, and they suggested that I wait a few years for them to fill in naturally. However, is th...

Dr. Zheng Lizhen Reply:
Hello: There are three methods to accelerate the improvement of acne scars. The fastest method is laser resurfacing; however, it has the drawbacks of high costs and the possibility of post-inflammatory hyperpigmentation. The second method is localized chemical cauterization, whic...

Effective Treatments for Acne Scars: Cost and Time Considerations

Acne Scar Hero Hello Dr. Cheng: Due to severe acne during my adolescence, I have many acne scars left behind. Could you please advise on the correct methods to effectively eliminate these scars, as well as the associated costs and time required? Thank you.

Dr. Zheng Lizhen Reply:
Hello: The treatment methods for acne scars vary depending on their size, depth, and the patient's age. Generally, superficial acne scars can be treated with retinoids or alpha hydroxy acids, which can improve the scars with long-term use and repeated cycles of peeling and h...

Effective Solutions for Mosquito Bites and Skin Scarring

I don't want the hot ice! Hello Dr. Huang, 1. Due to having a flower garden at home, there are a lot of mosquitoes. I almost have to "donate blood" several times a day. Some mosquito bites swell for about one or two days and then subside, but recently, the bites h...

Dr. Huang Ruiyun Reply:
The most effective way to prevent mosquito bites is with DEET (N,N-diethyl-meta-toluamide), which is the main ingredient in the green can of Off! and can also be found in other brands at pharmacies. DEET-containing creams are generally more effective than sprays. Commonly referre...

Understanding Itchy Labia: Causes and Solutions for Skin Concerns

excuse me? Since I was 16 or 17, I have experienced itching in the area of the labia majora for reasons I do not understand. I have not engaged in sexual activity and I maintain good hygiene. I have been too afraid to see a doctor, and now I have developed hyperpigmentation, skin...

Dr. Chen Yiying Reply:
Hello: In response to your question, it is really difficult to provide assistance based solely on this description. Although the affected area is sensitive, it is still advisable to consult a physician for a thorough examination. The most likely condition is chronic dermatitis; s...

Effective DIY Methods to Remove Acne Scars and Prevent Breakouts

Acne vs. Acne Scars Issues Hello, I would like to ask a question. If the acne is gone but there are still stubborn acne scars left, what are some DIY methods to help eliminate them? Also, if you feel like a certain area on your face is about to break out, how can you prevent it f...

Dr. Zheng Lizhen Reply:
Hello! 1. Acne scars can be categorized into "true scars" (atrophic or hypertrophic scars) and "false scars" (erythema or hyperpigmentation). True scars, specifically atrophic scars, can be treated with dermabrasion, with most cases currently using laser resur...

Previous｜Page ｜Next