Hyperpigmentation, Dermatology FAQ

There is darkened skin on the abdomen? In the past few days, I noticed that the skin on one side of my abdomen has a distinctly different color. I searched online but couldn't determine whether it is a sweat stain, another skin condition, or simply hyperpigmentation.

Eczema or folliculitis? During my university years in Yilan, I remember that I started developing some red, raised lesions on my thighs, buttocks, and arms, which would leave scars. As someone who really cares about my appearance and loves to dress up, I became very self-consciou...

Raised scar-like lesions I saw a dermatologist a long time ago, but I can't remember the name of the raised bump that developed due to friction. The bump on my calf is quite large, and I want to have it removed with laser treatment. Recently, I also noticed a small bump wher...

Issues with the use of retinoids, concerns about skin whitening, and problems related to salicylic acid exfoliation? Hello, Doctor. Thank you for taking the time to answer health consultation questions. Having the opportunity to ask these questions is truly helpful for those who ...

Hyperpigmentation on the inner side of the right thigh? I have dark pigmentation on the inner side of my right thigh. I consulted a dermatologist who said it is hyperpigmentation. I just want to ask if it's possible to have hyperpigmentation only on the right side of the inn...

Skin pigmentation changes after receiving the monkeypox vaccine? Hello Doctor, I received the monkeypox vaccine (intradermal injection) on April 25, and it was administered on my left forearm. It has been four weeks since the vaccination, and the injection site no longer shows an...

Angular cheilitis with darkening at the corners of the mouth? Recently, my immune system weakened, which resulted in a red, itchy condition at the corners of my mouth. However, after taking B vitamins, the itching has stopped. I have noticed that the corners of my mouth have been...

Could you please provide information regarding the recurrence of dermatofibromas after excision? Hello, Doctor! I apologize for the interruption, but I have a personal situation I would like to inquire about. I'm not sure if I need to seek medical attention again or undergo ...

Does taking "Saler" have any effect on picosecond laser treatment? Hello, doctor. Due to my issue with ankylosing spondylitis, I am currently taking 2 tablets of sulfasalazine daily. I have found that this medication is metabolized in the body to salicylic acid (the mai...

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...

What should I do if a sebaceous cyst wound turns black? Hello: I originally had one sebaceous cyst (during my college years), but over the past two years, it seems to have developed into two cysts. I consulted a doctor, and the clinic physician mentioned that the two cysts appear...

A sudden appearance of a black spot on the arm? Hello Doctor, today I suddenly noticed a small black bump on my arm that is less than 0.1 cm in size (it's slightly raised, visible but not very noticeable to the touch, and it doesn't hurt). Upon closer inspection, I foun...

Hyperpigmentation in the groin area? Hello, doctor. I have a problem with hyperpigmentation in the groin area due to long-term vigorous scrubbing while showering (I have similar issues in other parts of my body as well, as I easily develop friction-induced hyperpigmentation). I w...

Nipple eczema with increased pigmentation? Hello Doctor: At the beginning of this year, I experienced itching on my right areola, which was later diagnosed as eczema by a dermatologist. I was prescribed medication to apply, but it has still resulted in hyperpigmentation. Recently...

Scarring / Hyperpigmentation Can I ask the doctor, because I have long-term eczema and allergy issues, I tend to develop scars on the affected areas. What is the best way to remove these scars or hyperpigmentation? Is it effective to use scar gel? Thank you, doctor!

Pigmentation deposition Hello, doctor. After researching, I couldn't find a similar question, so I would like to consult you. About ten years ago, I sustained a significant bruise (only soft tissue injury) that resulted in a noticeable hyperpigmentation in the center of my t...

Folliculitis issues? Hello, Doctor: I frequently experience folliculitis on my forearms and below my chest (the deep type that becomes very swollen and red, and topical medications have not been effective) for several years. Previous doctors have suggested that it may be due to m...

Cauliflower (Condylomata Acuminata) - Issues Related to Electrocautery Treatment Hello doctor, I just underwent a penile electrosurgery today. I would like to ask about the swelling and hyperpigmentation that occurred due to the location of the warts on the foreskin. How long can...

Regarding the pigmentation that remains after a rash? Hello Doctor, I am currently not in the country, so I would like to inquire here. In mid-February, I noticed an oval-shaped red rash near my armpits on both sides of my chest, which was slightly itchy. It gradually spread to b...

Post-treatment pigmentation after cryotherapy for viral warts? Hello Doctor: I recently had viral warts on my face, and the doctor performed cryotherapy on me about seven times. However, I now have a large area of significant hyperpigmentation on my face. The doctor later prescri...