Isotretinoin, Dermatology FAQ - Page 8

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Is Prescription of Oral Vitamin A Acid Approved by Health Authorities?

Oral vitamin A acid In order for a physician at your hospital to prescribe oral isotretinoin (vitamin A acid), is it necessary to obtain approval from the Department of Health beforehand? Do all hospitals and clinics in the country need to go through this approval process?


Dr. Chen Yiying Reply:
Oral isotretinoin is a high-cost medication, and the National Health Insurance Administration requires a prior authorization process, which must include a photo, consent form, and a copy of the medical records. Approval must be obtained before insurance coverage is granted. Gener...

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Understanding Oral A Acid: Liver Function and Medication Metabolism

Oral isotretinoin inquiry..? It is said that individuals with impaired liver function should not take isotretinoin (A acid) due to potential issues with drug metabolism. What are these so-called drug metabolism issues? If liver enzyme levels such as AST and ALT are regularly moni...


Dr. Zheng Lizhen Reply:
Hello! The liver is a major organ responsible for the metabolism and processing of most medications. If the liver's function is impaired, it can lead to an increased burden on this organ and even affect its ability to provide essential conditions for survival, which relates ...

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Understanding Oral Vitamin A Acid for Acne Treatment: Benefits and Side Effects

Regarding oral isotretinoin? Hello Dr. Cheng, I have been troubled by acne for five years. I have visited various hospitals and clinics, and have taken various oral antibiotics such as Tetracycline, Minocycline, Erythromycin, Doxycycline, and Cotrimoxazole for about six months e...


Dr. Zheng Lizhen Reply:
Oral isotretinoin side effects: 1. The most common issues are dryness of the skin and mucous membranes, so it is important to maintain skin hydration and frequently apply lip balm. Patients who wear contact lenses may also experience a foreign body sensation due to dryness, so th...

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Understanding the Link Between Acne and Hormonal Imbalance

Acne and Endocrine System? Hello, doctor! I would like to ask about the relationship between acne and endocrine factors. During my teenage years, I hardly had any acne—maybe just one or two pimples a year. My skin was quite oily and sweaty, but overall, it was in good condition! ...


Dr. Jin Lianchun Reply:
Hello, Miss: The medical term for acne is "acne vulgaris," which includes comedones, papules, pustules, and large cysts, not all of which can be extracted. There are many reasons for the development of acne, including the following major factors: 1. Skin type: Some indi...

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Does Fruit Acid Thin Your Skin? Insights on Acne and Side Effects

Does alpha hydroxy acid thin the skin? Hello, doctor. 1. I have seen online that some users experienced thinning and sensitivity of the skin after using alpha hydroxy acids (AHAs). Is this a real possibility? 2. Can the use of AHAs improve the appearance of acne scars? 3. W...


Dr. Zheng Lizhen Reply:
1. After an alpha hydroxy acid (AHA) peel, it is the stratum corneum that becomes thinner, not the entire skin. On the contrary, the epidermis may actually thicken. Therefore, the notion that the skin becomes thinner after an AHA peel is fundamentally incorrect; those who claim t...

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Understanding Acne on Thighs, Arms, and Back: Causes and Solutions

Acne Why do I have acne on my thighs that has lasted for a long time? I also have it on my arms and back, some of which can be squeezed and some cannot?


Dr. Jin Lianchun Reply:
Hello, sir: The medical term for acne is "acne vulgaris," which includes comedones, papules, pustules, and large cysts, not all of which can be extracted. There are many reasons for the development of acne, including the following major factors: 1. Skin type: Some indiv...

[Read More] Understanding Acne on Thighs, Arms, and Back: Causes and Solutions


Struggling with Severe Acne: Seeking Effective Solutions and Advice

Acne issues? Hello Doctor, I would like to inquire about a skin issue. I have a severe acne problem on my face that has persisted for ten years. I am 22 years old (female) and there has not been much improvement during this time (I may have a genetic predisposition). I avoid all ...


Dr. Jin Lianchun Reply:
Hello, Miss: There are many reasons for the development of acne, including the following major factors: 1. Skin type: Some individuals have a tendency for excessive keratinization that blocks pores, along with sebaceous glands that secrete an excessive amount of oil. 2. Hormonal ...

[Read More] Struggling with Severe Acne: Seeking Effective Solutions and Advice


Understanding Roseola: Symptoms, Causes, and Contagion Risks

Roseola rash The patient has developed a rash, and the outpatient physician diagnosed it as roseola but did not provide the reason for the diagnosis, only mentioning that it is contagious.


Dr. Zheng Lizhen Reply:
Pityriasis rosea is believed to be associated with infections, as it commonly occurs in spring and winter, similar to many viral or bacterial infections. There have been observations of close contacts also developing this condition, leading some to believe it may be contagious; h...

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