Scars, Dermatology FAQ

Overcoming Acne Scars: Regaining Confidence in Your Skin

Lack of confidence..? Hello doctor: During my puberty, I developed acne and blackheads on my face, and I often squeezed them with my hands. As a result, I have many shallow scars and small red lines on my face (which look like a cluster of broken capillaries). Additionally, I hav...

Dr. Zheng Lizhen Reply:
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; currently, most procedures use laser resurfacing, whic...

Effective Scar Treatment: Do Vitamin E and Aloe Vera Really Work?

How to treat scars? Hello: I have two lacerations on my face that have been sutured, but the affected areas have developed scars that are indented. I have heard that applying vitamin E to the scarred areas or using aloe vera can help reduce scarring. Is this information correct? ...

Dr. Zheng Lizhen Reply:
The scar you have is an atrophic scar, which can be treated with dermabrasion. Currently, most procedures use laser dermabrasion, which causes less damage than traditional microdermabrasion and has a quicker recovery time, with wound healing taking about a week. If the scar is de...

Dealing with Flea Bites: Itching Relief and Scar Treatment Tips

It really itches? A few days ago, while organizing the warehouse, I unfortunately got bitten by fleas, resulting in over twenty welts. Initially, they weren't very itchy, but by nighttime, the itching became unbearable, making it impossible to sleep. I consulted a doctor, wh...

Dr. Zheng Lizhen Reply:
The most common sources of fleas are cats, dogs, and mice. Although fleas prefer to feed on the blood of these hosts, they will also bite humans when given the opportunity, especially in the absence of their usual hosts. Therefore, do not assume that sending away cats or dogs inf...

Understanding Eyelid Bumps: Causes and Scar Treatment Options

Scar Hello, doctor. I occasionally develop hard bumps on my eyelids that are neither painful nor itchy, and they cannot be squeezed out like acne. I have asked family members to use a needle to remove them, but since they are on the eyelids, they cannot be completely eliminated. ...

Dr. Zheng Lizhen Reply:
Based on your description, it could be a sebaceous cyst or an apocrine gland tumor. Please visit a dermatologist in person for an accurate diagnosis and treatment. Do not attempt to squeeze or remove it yourself, as this may lead to unnecessary scarring.

Understanding Skin Issues: How to Treat and Prevent Butt Acne Scars

I don't know what disease it is? When I was in middle school, I started to develop small bumps on my buttocks that resembled pimples. Initially, they would feel hard, and after a day or two, they would become pus-filled. I would squeeze them, and dark red blood would come ou...

Dr. Zheng Lizhen Reply:
Based on your description, your issue may be folliculitis, a boil, or a carbuncle. It is recommended that you consult a dermatologist nearby for an accurate diagnosis and treatment. Avoid prolonged sitting and refrain from wearing tight-fitting pants or less breathable jeans.

Dealing with Red Bumps on Your Face: Causes and Solutions

There are many small red spots on my face! Hello Dr. Zheng: I hardly had acne during puberty, but I started to develop adult acne after entering college. Additionally, my skin is quite fair, so acne scars are slow to fade! (I occasionally apply topical treatments similar to retin...

Dr. Zheng Lizhen Reply:
It is recommended that you have a dermatologist examine the small red spots on your face. Regarding the dryness of your facial skin, consider that using tretinoin can commonly lead to dryness and peeling. You may be applying too much medication or using a cleanser that is too har...

Can Glycolic Acid Completely Fade Acne Scars Over Time?

Acne scars Is it true that the red acne scars left by acne can fade away completely with long-term use of glycolic acid (for about six months), or will they only lighten a little and not completely disappear?

Dr. Jin Lianchun Reply:
Hello, sir: Acne scars are classified into atrophic, hypertrophic, and non-atrophic types. If the scars are only red without any indentations or elevations, they will fade away; however, if there are indentations or elevations, topical treatments alone will not suffice for their ...

Understanding Acne Scars: Costs and Best Laser Treatments in Taiwan

Acne I have seen many questions regarding acne. I also have some scars left from acne on my face. I would like to ask how the cost is calculated for laser treatment for acne scars? Where can I find better equipment for this procedure?

Dr. Zheng Lizhen Reply:
Acne scars that leave indentations can be treated with dermabrasion procedures, with most currently utilizing laser resurfacing techniques, which cause less damage compared to traditional microdermabrasion. Among laser resurfacing options, erbium YAG laser has a lower risk of the...

Understanding Adult Acne vs. Teen Acne: Tips for Fading Scars

I'm sorry What are the differences between adult acne and adolescent acne? How can acne scars be lightened?

Dr. Zheng Lizhen Reply:
What you refer to as adult acne is likely "late-onset acne." This term is used to avoid the common misconception that acne, often referred to as "teenage acne," only affects adolescents. In reality, acne is not exclusive to teenagers. The main causes of late-o...

Effective Scar Removal for Acne Marks: Student-Friendly Solutions

Scar removal What are the most effective methods for removing acne scars caused by squeezing, and which options are suitable for students?

Effective Treatments for Keloids: Long-Term Solutions and Risks of Steroid Injections

Keloid Hello, I have a keloid on my chest that measures approximately 10 cm in length, 3 cm in width, and 0.5 cm in thickness. It often feels itchy, and when it itches, the area of the keloid expands, becoming red and swollen. I have previously visited a dermatologist for steroid...

Dr. Zheng Lizhen Reply:
The formation of keloids is related to individual constitution and various external factors. External factors such as infections, burn scars, and foreign bodies can easily lead to the development of hypertrophic scars. Due to the involvement of individual constitution, there is c...

Understanding AHA Peels: Side Effects, Costs, and Safety Concerns

Regarding alpha hydroxy acid (AHA) peels? I would like to ask if there are any side effects after undergoing a chemical peel with alpha hydroxy acids (AHAs)? For example, redness, etc. I've seen classmates who had their faces burned after the procedure, which is quite scary....

Dr. Zheng Lizhen Reply:
Glycolic acid peels have shown good results in the treatment of acne, hyperpigmentation, and superficial wrinkles. It is recommended to first consult with your dermatologist for a diagnosis before deciding whether to undergo a glycolic acid peel. The cost varies by clinic, genera...

Understanding Red and Black Acne Scars: Treatment and Care Tips

Red and black acne scars? I have a question for the doctor. Recently, I visited a dermatologist for acne scars, and the doctor prescribed a yellow ointment for me to apply (it looks like tretinoin). He instructed me to apply it to the areas with acne and red or dark pigmented sca...

Dr. Zheng Lizhen Reply:
Applying tretinoin can indeed improve acne and hyperpigmentation. After application, it may cause peeling due to the exfoliation of the skin. It is important to apply a "thin layer" at "night" to allow for mild peeling, which yields the best results. If peelin...

Effective Scar Treatment: New Bandages for Old Scars Explained

Scar Is there a new type of adhesive bandage (not cosmetic tape) that can make scars less noticeable (including old scars)? Is it really effective? Where can I purchase it?

Dr. Liao Wenyu Reply:
Hello: As far as I know, it is silicone sheets, which have been on the market for quite some time. I'm not sure if what you mentioned refers to this. Generally speaking, silicone sheets are more effective for new scars and can also be effective for hypertrophic scars, but th...

Best Skincare Products for Acne Scars: Expert Recommendations

What type of skincare products should be used for acne? Hello, Doctor: I apologize for bothering you again. I currently have red and dark scars on my face. I consulted a dermatologist who said that I do not need to undergo chemical peeling, but the red and dark marks are really u...

Dr. Zheng Lizhen Reply:
There are many skincare products designed for acne-prone skin available through medical channels. Here are a few for your reference, and please choose based on what is convenient for you to purchase: Paula's Choice AHA Exfoliating Liquid, AHA Lotion, and Oil Control Lotion; ...

Safe and Scar-Free Mole Removal: Laser Treatment Insights

Mole removal If a mole is located on the face, will laser treatment harm the facial bones? This is the only dark mole on my face, and I don't particularly like it. I hope to choose a treatment that leaves no scars. Is that possible? If so, please let me know. Also, does lase...

Dr. Zheng Lizhen Reply:
The treatment of moles depends on their size, location, depth, and whether they are raised or not. Even when using laser treatment, the choice of laser type is determined by these factors. Some areas may leave scars while others may not, so a personal consultation is necessary to...

Understanding Skin Types: Do Genetics and Sun Exposure Affect Acne?

Constitution Thank you for your detailed explanation! Some of my classmates study later than I do, but they don’t have a single pimple. Could this be related to their constitution? Does sun exposure make acne scars more noticeable? Is using skin-colored tape effective? Can skin-c...

Dr. Jin Lianchun Reply:
Hello, Miss: 1. You are correct that acne is related to one's constitution. Individuals with a "prone to acne constitution" will develop acne when they experience hormonal imbalances (the reasons I mentioned to you last time). Those without a "prone to acne ...

Effective Scar Treatment: New Bandages for Old Scars

Scar Is there a new type of adhesive bandage (not cosmetic tape) that can make scars less noticeable (including old scars)? Is it really effective? Where can I purchase it?

Dr. Jin Lianchun Reply:
Hello, sir: There is a type of "silicone" that can be used to treat hypertrophic scars and keloids, but it must be worn continuously for more than six months, with an effectiveness of about twenty to thirty percent. It can be purchased at large pharmacies or medical sup...

Effective Treatments for Hypertrophic Scars: Silicone Sheets vs. Steroid Injections

Keloid Hello, two years ago I had a cesarean section which left me with a prominent scar that often itches intensely. I later learned that this is due to my individual skin type. A dermatologist suggested using steroid injections to soften and flatten the scar, but it would be ve...

Dr. Zheng Lizhen Reply:
Silicone sheets are used to treat hypertrophic scars or keloids, and noticeable improvements in scar softness and flattening can typically be observed after about three months. The cost varies depending on the size of the silicone sheet, generally around a thousand New Taiwan Dol...

Understanding Crusted Scabies: Causes, Prevention, and Scar Treatment

Crusted scabies My face tends to be oily, and I have always suspected that I have acne. I often get raised bumps on my face that seem to have something inside. When I try to squeeze them, they feel like a mix of blackheads and flesh, and they are difficult to heal without extract...

Dr. Jin Lianchun Reply:
Hello, sir: What you may be referring to is "nodular prurigo." The formation of nodular prurigo is quite complex and is associated with several factors: 1. A more sensitive constitution, 2. Sensitive skin, and 3. Exposure to allergens, which may include seasonal factors...

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