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Understanding Unilateral Facial Rashes: Causes and Concerns

Facial rash, present only on the right side of the face? Hello Doctor: In the past month, I have developed 5-7 red spots on the right side of my face, specifically near the right side of my mouth. These spots are about the size of a typical mole, but they are neither itchy nor pa...

Dr. Lin Mingxiu reply Dermatology
Hello: 1. There are many possible causes for facial rashes, including acne, folliculitis, eczema, insect bites, and rosacea. Based on your description, the bump on your right hand is most likely an insect bite or eczema. A definitive diagnosis should be confirmed by a dermatolo...

How to Differentiate Between Eczema and Tinea Cruris at Home?

What should I do if I have itching on the side? Hello, Doctor: My father has recently experienced itching in both knees, and he also has a fungal infection known as athlete's foot. He has a history of allergic reactions, making him prone to eczema on his limbs and torso. I w...

Dr. Lin Mingxiu reply Dermatology
Itchy lesions on the knee may be due to tinea or fungal infection. If there are typical annular lesions, they can be visually identified as tinea corporis. However, if the borders are not well-defined, it can sometimes be difficult to differentiate from eczema. It is recommended ...

Understanding Tumors on the Thigh: Which Specialist to Consult?

Tumor in the thigh? You should see an orthopedic surgeon or a general surgeon for evaluation of the tumor on your thigh.

Dr. Lin Mingxiu reply Dermatology
If the issue is only in the subcutaneous fat layer, you can consult a dermatologist; if it involves the muscle layer, you should see a surgeon.

Why Are My Skin Spots Raised? Understanding Rapid Changes and Care

Could you please clarify the issue regarding the raised spots? Hello, doctor. I have a question about why spots are becoming raised on my cheeks, particularly on the left and right sides of my face. They are spreading rapidly. I have oily skin with slightly enlarged pores and oft...

Dr. Lin Mingxiu reply Dermatology
1. Raised spots on the zygomatic bone and cheeks are most commonly seborrheic keratosis, but if they spread rapidly (growing significantly or quickly), other lesions should be suspected, and a visit to a dermatologist for diagnosis is necessary! 2. Acne that worsens with the me...

Can Expired Sunscreen Still Be Used? Understanding SPF Effectiveness

Sunscreen Hello, Doctor. I would like to ask if it's safe to use a branded sunscreen (like La Roche-Posay) that has expired but has never been opened and does not cause any allergic reactions when applied. Additionally, do medical-grade sunscreen products actually have the S...

Dr. Lin Mingxiu reply Dermatology
1. It is recommended not to use sunscreen after its expiration date to avoid adverse effects on the skin. 2. Do medical aesthetic sunscreen products really have the SPF indicated on the label? Generally, reputable manufacturers and well-known brands are less likely to mislabel ...

Understanding Sudden Circular Hair Loss: Is It Normal?

Hair loss I recently noticed a sudden loss of hair in a circular patch, approximately 4 cm in diameter, located above my left ear. I currently have no other health issues. Is this normal hair loss?

Dr. Lin Mingxiu reply Dermatology
Alopecia areata, commonly referred to as "spot baldness" or "ghost shaving," is a prevalent form of hair loss seen in dermatology clinics, with its exact cause remaining unknown. It can affect individuals of any age, particularly young people. The condition ty...

Understanding Male Pattern Baldness: Treatment Options and Insights

Hair loss... androgenetic alopecia? Doctor Lin, do you provide treatment for hair loss?

Dr. Lin Mingxiu reply Dermatology
Yes, general dermatology clinics provide treatment. You are welcome to consult at the outpatient department.

Subcutaneous Fat Lump at the Back of the Head: Should It Be Removed?

Subcutaneous fat mass located at the lower posterior aspect of the head? My father's subcutaneous fat mass located at the lower back of his head seems to have increased in size recently. I'm unsure whether he should undergo surgery to have it removed. Since it's lo...

Dr. Lin Mingxiu reply Dermatology
Based on the description of a subcutaneous fat mass located at the lower back of the head, if it does not extend into the muscle layer, a physician will assess whether it can be excised in a dermatology setting. If the mass has increased in size, further examination by a physicia...

Understanding Blisters: Why Do They Form on Feet During Exercise?

Why do blisters form on the soles of the feet during exercise? Blisters often form on the skin as a result of friction, heat, or other forms of irritation during physical activities. When you engage in repetitive motions, such as running or performing the same action for an exten...

Dr. Lin Mingxiu reply Dermatology
Blisters on the soles of the feet after exercise are typically friction blisters, which are caused by continuous friction or pressure. Friction blisters commonly occur on the feet, where tighter shoes may rub and irritate the skin and tissues, leading to minor damage. This result...

Understanding Keloids: Impact on Skin Treatments and Surgery

Keloid issue!! Hello Dr. Lin, I would like to inquire about the recent occurrence of keloids. Since I have acne scars on my face, I am considering whether I can undergo a dermabrasion procedure. Additionally, I would like to ask if having a keloid-prone constitution affects the h...

Dr. Lin Mingxiu reply Dermatology
Hello~ 1. Individuals with a keloid tendency are generally advised against undergoing dermabrasion surgery. Typically, keloids are more likely to develop in areas of high tension, such as the chest, back, upper arms, and shoulders, with the chin being a common site on the face, a...