Грибковые инфекции (стригущий лишай, трихофития) Причиной стригущего лишая волосистой части головы является грибковая инфекция. Стригущий лишай волосистой части головы встречается чаще у детей, чем у взрослых. Грибковые инфекции кожи головы представлены различными формами в зависимости от тяжести поражения и источника инфекции. При легкой степени поражения грибковой инфекцией на коже головы возникает зуд и пятна, покрытые…
Whether treating : dermal and/or epidermal melasma… with topicals (Hydroquinone…)… with chemical peels… with lasers… …Always document the treatment with: Clinical Photographs Measurement of the pigmentation on the skin (Skin Chromameter) Contributors: Dr Christophe HSU – dermatologist. Geneva, Switzerland Source of Information: 2012 (09) – Sachdev M. .21st Annual Congress of the EADV (European Academy…
Whether treating : dermal and/or epidermal melasma… with topicals (Hydroquinone…)… with chemical peels… with lasers… …Always document the treatment with: Clinical Photographs Measurement of the pigmentation on the skin (Skin Chromameter) Contributors: Dr Christophe HSU – dermatologist. Geneva, Switzerland Source of Information: 2012 (09) – Sachdev M. .21st Annual Congress of the EADV (European Academy…
An SPF (Sunprotection Factor) of 30 or more is recommended Physical sunscreens containing particles are privileged (over chemical sunscreens). Indeed physical sunscreens protect against all the visible light and not only UV rays. Sunprotection is only effective if sunexposure is avoided Contributors: Dr Christophe HSU – dermatologist. Geneva, Switzerland Source of Information: 2012 (09) –…
An SPF (Sunprotection Factor) of 30 or more is recommended Physical sunscreens containing particles are privileged (over chemical sunscreens). Indeed physical sunscreens protect against all the visible light and not only UV rays. Sunprotection is only effective if sunexposure is avoided Contributors: Dr Christophe HSU – dermatologist. Geneva, Switzerland Source of Information: 2012 (09) –…
Articles are available concerning (exogenous) ochronosis It can be said here that: It is not as rare as we think This side effect of hydroquinone use is underreported and underdiagnosed. Indeed a biopsy (often on the face) is needed to make the diagnosis. Contributors: Dr Christophe HSU – dermatologist. Geneva, Switzerland Source of Information: 2012…
Articles are available concerning (exogenous) ochronosis It can be said here that: It is not as rare as we think This side effect of hydroquinone use is underreported and underdiagnosed. Indeed a biopsy (often on the face) is needed to make the diagnosis. Contributors: Dr Christophe HSU – dermatologist. Geneva, Switzerland Source of Information: 2012…
About lentigo solaris (solar lentigo, lentigines): Occurs in sun exposed areas typically in individuals aged 50 and over Histologically, pigmentation is located in the epidermis, in the basal layer. (Stratum basale) It is caused by an increased number of melanocytes who have a normal amount of melanin Treatment options include: cryotherapy chemical peels Solar lentigines…
Post-inflammatory hyperpigmentation is located in the dermis. Wood’s lamp is useful to diffrentiate with other pigmentary disorders such as melasma (chloasma, pregnancy mask) Causes include: infections allergies mechanical factors or trauma phototoxic and photoallergic (cosmetics) reactions inflammatory skin conditions (lichen planus, Systemic Lupus Eythematosus (SLE)) Treatment: the condition is spontaneously resolutive over a few months…
Epidemiology Melasma (chloasma, pregnancy mask) is more frequent in Caucasian individuals with the following genetic factors: In Germans, Poles and Russians In individuals of Jewish descent (location is typically on the the face) If we take into account skin phototypes (Fitzpatrick): types I and II phototypes tend to have melasma before pregnancy and in young…
