Global Dermatology - Christophe HSU MD: Dermatologist; Dermatologue

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Geneva
Global Dermatology - Christophe HSU MD: Dermatologist; Dermatologue

The Global Dermatology Practice offers clinical services and aims to complement the Global Dermatology Information Portal. Consultations in English.

Located in downtown Geneva behind the Mandarin Oriental Hotel, this dermatology centre is mainly designed to offer medical dermatology services to:
-the non-French speaking expatriate community in Geneva.
-those visiting Geneva. Access:
-By foot: a few minutes walk from Bel-Air (Cité).
-By car-parking: The best option is to park in the parking of the Mandarin Oriental Hotel and to walk up a fligh

t of stairs (one floor).
-By public transport: Stops Isaac Mercier (lines 7, 11 and 15) and Simon-Goulart (lines 11, 15 and 18). PS: We do not give medical advice to non-patients.

30/04/2026

Darier’s Disease – What You Should Know [Link under comments]
-Darier’s Disease (also called Darier-White disease) is a rare inherited skin condition that usually begins around puberty. It affects the way skin cells stick together, leading to characteristic skin changes.
-It typically appears as greasy, brownish bumps on areas such as the chest, face, and behind the ears. Other features may include small pits on the palms and lines or streaks in the nails.
-The skin can be more fragile, making it prone to irritation and infections.
-While there is no cure, treatments such as topical creams and oral medications can help control symptoms. If you notice persistent or unusual skin changes, a medical assessment is recommended. 🩺

23/04/2026

Tumours & Birthmarks on the Scalp [Link under comments]
-The scalp can develop a variety of growths, ranging from harmless birthmarks to precancerous and, rarely, cancerous lesions. Recognising changes early is important.

-Common examples include:
• Naevus Sebaceous – a congenital (present at birth) patch that may become thicker or wart-like over time; usually harmless but sometimes removed as a precaution
• Seborrheic Keratosis – very common, non-cancerous growths seen in adults, often appearing as brown or black raised spots
• Actinic Keratosis – rough, scaly patches caused by sun exposure, especially on balding scalps; these require treatment to prevent progression

-Rarely, more serious conditions such as Angiosarcoma can occur and need urgent medical attention.
-While many scalp lesions are benign, any new, changing, or unusual growth should be checked by a doctor. Early diagnosis allows for effective treatment and peace of mind. 🩺

17/04/2026

Dandruff - What You Should Know (Seborrheic Dermatitis) [Link under comments]
-Dandruff, also known as Pityriasis simplex capitis, is a common scalp condition most often related to Seborrheic Dermatitis. It is associated with a naturally occurring yeast called Malassezia.
-It typically causes flaking of the scalp, sometimes with redness and itching. In some cases, similar symptoms may also appear on the face or upper body.
-While dandruff is usually harmless, other conditions such as psoriasis, eczema, or fungal infections can look similar. If symptoms are persistent or severe, a medical assessment may be helpful.
-With the right treatment, dandruff can usually be well controlled. 🩺

11/04/2026

Skin Problems Caused by Cosmetic Products [Link under comments]
-Cosmetics and skincare products can sometimes irritate the skin or trigger reactions, especially in individuals with sensitive skin.
-The most common issue is Irritant Contact Dermatitis, which may cause burning, stinging, redness, or a rash—often after using cleansers, toners, or undergoing facial treatments.
-Another type is Allergic Contact Dermatitis, where the skin reacts to specific ingredients such as fragrances, preservatives, or sunscreens. This may lead to itching, swelling, or even blistering, sometimes after repeated use.
-Cosmetics can also trigger acne (pimples), especially heavier or oil-based products that clog pores.
-If you notice a reaction, it is important to stop all products immediately and seek medical advice. In some cases, tests such as patch testing can help identify the exact cause.
-Choosing gentle, suitable products and introducing new cosmetics carefully can help reduce the risk of skin problems. 🩺

05/04/2026

Melasma – Understanding Facial Pigmentation [Link under comments]
-Melasma is a common skin condition that causes brown or greyish patches, usually on the face. It often affects women of childbearing age and is sometimes called the “pregnancy mask.” Hormonal factors, including pregnancy and oral contraceptives, play an important role in its development.
-Melasma typically appears on the cheeks, forehead, nose, and upper lip, and is often triggered or worsened by sun exposure.
-Although harmless, melasma can be persistent and prone to recurrence, especially without proper sun protection. Treatment usually starts with topical creams and strict sun protection, while procedures such as chemical peels or lasers may be considered in some cases.
-Consistent care and sun avoidance are key to managing this condition effectively. ☀️🩺

29/03/2026

Chickenpox – What You Should Know [Link under comments]
-Chickenpox is a common and highly contagious infection caused by the Varicella Zoster Virus, most often affecting children.
-It usually starts with a rash that develops into itchy blisters, which then dry and form scabs. A key feature is that spots appear in different stages at the same time. The rash is often very itchy, and scratching can lead to infection or scarring.
-Chickenpox spreads easily from person to person and remains contagious until all the spots have crusted over, so isolation is important.
-Most cases are mild and treated with symptom relief, but medical care may be needed in more severe cases or in high-risk individuals.
-The condition is preventable with vaccination, which is part of routine childhood immunization in many countries.
-The virus can stay in the body and reactivate later in life as shingles, also known as Herpes Zoster.
-If you or your child develop symptoms, especially during pregnancy or adulthood, it’s important to seek medical advice. 🩺

23/03/2026

Skin Cancer – What You Should Know [Link under comments]
-Skin cancer is increasingly common, especially in countries like Switzerland where people enjoy outdoor activities such as hiking and skiing. Higher altitudes mean greater exposure to ultraviolet (UV) rays, which can increase the risk over time.

-The three most common types of skin cancer are:
• Basal Cell Carcinoma – slow-growing and linked to long-term sun exposure
• Squamous Cell Carcinoma – also related to cumulative sun exposure and may develop from Actinic Keratosis
• Malignant Melanoma – less common but more serious, often linked to intense, intermittent sun exposure

-With increasing age and sun exposure, the risk of skin cancer rises. Regular skin checks can help detect changes early.
-Most skin cancers and precancerous lesions can be treated effectively, especially when found early. Treatments may include freezing (cryotherapy) or minor surgical removal.
-Protecting your skin from the sun remains one of the most important steps in prevention. ☀️🩺

16/03/2026

Skin Signs of Internal Cancers (1 of 2)
-Sometimes the skin can give clues about diseases inside the body. Certain skin changes may act as early warning signs of internal cancers, helping doctors detect problems earlier.

-These skin signs generally fall into two groups:
• Skin conditions linked to internal cancers, such as Acanthosis Nigricans or Dermatomyositis.
• Skin metastases, where cancers from organs such as the breast, lung, or colon spread to the skin and appear as firm nodules.

-Most skin changes are harmless, but new, unusual, or persistent skin lesions should always be evaluated by a doctor. -Early recognition can help with timely diagnosis and treatment. 🩺 [Link under comments]

09/03/2026

Basal Cell Carcinoma – What You Should Know [Link under comments]
-Basal Cell Carcinoma is the most common type of skin cancer. It develops from cells in the outer layer of the skin and is mainly caused by long-term exposure to ultraviolet (UV) radiation from the sun. It most often appears on sun-exposed areas such as the face, ears, neck, scalp, and hands.
-Basal cell carcinoma usually grows slowly and rarely spreads to other parts of the body. However, if left untreated, it can continue to grow and damage nearby skin and tissues. It may appear as a shiny or pearly bump, a pink patch, a sore that does not heal, or a growth that bleeds easily.
-Early detection and treatment are very important and are usually highly effective. Protecting your skin from excessive sun exposure and seeking medical advice for any new, changing, or non-healing skin lesions can help ensure early diagnosis and proper care. ☀️🩺

03/03/2026

Introduction to Atopic Dermatitis (post 3 of 3) – Common Questions [Link under comments]
-In this third post on atopic dermatitis, we focus on some of the most common questions patients and parents ask about treatment, environment, and possible complications.
-Managing atopic dermatitis is not just about using creams during a flare-up. It involves understanding triggers, following proper skincare routines, using medications correctly, and knowing when to seek medical attention. Many people also wonder whether changing climate or environment can help, and whether there are risks of infections or other complications.
-In this post, we will address these important concerns and provide practical, easy-to-follow guidance to help improve symptom control and overall skin health.

23/02/2026

Introduction to Atopic Dermatitis (2 of 3) [Link under comments]
-Atopic dermatitis is the most common type of eczema. It is a long-term skin condition that causes dry, itchy, and inflamed skin. It often begins in childhood but can affect people of any age. The condition may come and go over time, with periods of flare-ups and periods when the skin is calmer.
-Atopic dermatitis occurs when the skin’s natural protective barrier is weaker than normal. This allows moisture to escape and makes the skin more sensitive to irritants, allergens, and environmental factors. As a result, the skin becomes dry, easily irritated, and itchy. Scratching can worsen the irritation and sometimes lead to skin infections.
-People with atopic dermatitis often have a personal or family history of allergies, asthma, or hay fever. The condition is not contagious and cannot be passed from person to person. While there is no cure, proper skincare and treatment can help control symptoms and improve comfort and quality of life.
-More on Atopic Dermatitis in the next post.

18/02/2026

Introduction to Atopic Dermatitis [Link under comments]
-Atopic dermatitis is the most common type of eczema. It is a long-term skin condition that causes dry, itchy, and inflamed skin. It often begins in childhood but can affect people of any age. The condition may come and go over time, with periods of flare-ups and periods when the skin is calmer.
-Atopic dermatitis occurs when the skin’s natural protective barrier is weaker than normal. This allows moisture to escape and makes the skin more sensitive to irritants, allergens, and environmental factors. As a result, the skin becomes dry, easily irritated, and itchy. Scratching can worsen the irritation and sometimes lead to skin infections.
-People with atopic dermatitis often have a personal or family history of allergies, asthma, or hay fever. The condition is not contagious and cannot be passed from person to person. While there is no cure, proper skincare and treatment can help control symptoms and improve comfort and quality of life.
-More on Atopic Dermatitis in the next two posts.

Adresse

Boulevard James Fazy 4
Geneva
1201

Webseite

http://genevadermatology.ch/

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