Melanin, Dermatology FAQ

Exfoliation caused by applying rhododendron flower acid? Due to prolonged standing, friction on the soles of my feet caused melanin deposition. After visiting a dermatologist, the doctor prescribed me azelaic acid and advised me to apply it thinly in the morning and evening. Afte...

The palm is pinched with red lines? Recently, my palm was pinched by a machine. I immediately checked my palm and noticed red lines from the pinch mark under the skin (there was no external bleeding). After two to three weeks, the pinch mark is still present and remains very noti...

Consultation Report Hello Doctor: Since I can only return for a follow-up next week, I would like to ask for your assistance in reviewing the pathology report to determine if it is benign. Thank you! Skin, buttock, right, excision, blue nevus. Description: The specimen submit...

Mole pigmentation Hello Doctor, in the past two years, I have noticed many new moles appearing on my body, both red and black, especially on my back, waist, and arms. There is also one in my intimate area, and a few on my face. Now, if I count them all, there should be more than ...

Mole pigmentation? Hello doctor, I recently noticed a prominent black mole on the skin of my genital area. It's not located on the labia minora, but rather on the outer skin of the labia majora. It's quite dark and I didn't have it before; it’s not very raised, mor...

Infant skin issues Hello, after my baby received the vaccine, the injection site healed but has turned a bit black. Could this be due to melanin deposition? Does getting an injection also cause melanin deposition? It has been almost two months, and there hasn't been any fadi...

A small black dot suddenly appeared on my arm? Hello, doctor. Today I suddenly noticed a black bump on my arm that is less than 0.1 cm, slightly raised. Upon closer observation, I found a few small black dots around the bump (forming a circle, with the center being clear, but the...

Nail issues? Hello, doctor. I've had nail problems since middle school, with my big toe appearing brownish and having black vertical lines. I researched online and found that it could be related to melanin. I'm wondering if, aside from being unsightly, it could have any...

Darkening and hyperpigmentation around the lips? Hello Doctor, my inner lip area is pink, but the pigmentation around my lips and at the corners has become very severe, and even the philtrum area is starting to darken. I initially thought it might be due to not properly removing ...

Melanin removal Hello doctor, I used to pluck my facial hair frequently during high school, and now the areas where I had hair growth appear dark even after shaving. I'm wondering if this is due to melanin, and if so, how can it be treated? Thank you.

Medical Report Hello Doctor, I have developed two moles on the edge of my foot (each less than 0.1 cm), which I discovered at the same time. Due to changes in size and irregular edges, I underwent excision surgery at the hospital. The outpatient physician indicated that the heal...

Moles and post-inflammatory hyperpigmentation? Dear Dr. Wu, Thank you very much for your personal advice regarding the article "<a href='https://adoctor.tw/article/151906'>#151906 Black Dots on the Scalp</a>". I would like to seek your expertise f...

Black spots on the glans penis? The presence of flat, irregularly shaped black spots on the glans of the penis that are not painful or itchy could be indicative of a benign condition such as melanocytic nevi (moles) or hyperpigmentation. However, it is essential to have a healthc...

Removal of melanin I would like to ask the doctor whether over-the-counter or dermatologist-prescribed depigmenting creams are actually effective, or if they are merely a placebo providing psychological comfort.

What is the usage of depigmentation cream? Is the depigmentation cream aimed at improving melanin? Is it effective when applied to the groin area or that side?

White patches have appeared on the body! My sister, born in 1994, has developed small white spots on her fingers, which currently appear to be mild. Recently, she has also noticed similar spots forming on her eyelids. We are unsure if there are any recommended doctors or treatmen...

Localized melanin deposition? Hello Dr. Wu: Thank you for taking the time to address my concerns. Since puberty, I have noticed black spots on my scrotum and near the urethra on my foreskin (one spot on the foreskin and two on the scrotum). They are not painful or itchy, and they...

Several black spots have appeared on the penis? Hello, I noticed a small, faint black spot in the middle of the surface of my penis the day after I engaged in masturbation two days ago. Additionally, I found two more black spots that appeared suddenly on the right side. I'm ...

Spots on a newborn's palm? The child is currently one month old. About a week after birth, a spot was noticed on the palm of the hand near the thenar eminence (it's uncertain if it was present at birth). Upon closer inspection, the color appears somewhat uneven. I have ...

How to regenerate melanin after a burn injury? Hello, Chief Physician! Could you please tell me what medications are available for treating depigmentation after burns? How can melanin regeneration be achieved?