The isomorphic phenomenon is the occurrence of the skin lesions in traumatized areas. This occurs in the following dermatoses: vitiligo, psoriasis, lichen planus, lichen nitidus, pityriasis rubra pilaris, and keratosis follicularis (Darier’s disease). It was described by Dr Heinrich Koebner (1838-1904) in 1876, a German dermatologist who trained in Paris and Vienna: he showed it…
This term comes from the Greek word: συριγξ = surinx = canal. The word is pronounced as ” surinx”. This origin is used in other medical fields (syringomyelia, syringobulbia, syringotomy) Information on Syringoma: Syringoma develop from the excretory lining of eccrine glands They are frequent benign tumors and affect more often females with familial forms.…
Birt–Hogg–Dubé syndrome is a dermatological condition with a heightened risk of tumors in the kidneys and lungs. The condition is characterized by multiple benign dome-shaped tumors of the hair follicles (fibrofolliculomas), located on the face, neck and sometimes on the upper chest.Trichodiscomas and acrochordons are other lesions occuring with this syndrome Birt-Hogg-Dubé syndrome was described…
Pustular psoriasis exists in the generalized and localized types. Acrodermatitis continua of Hallopeau of acral psoriasis characterized by spongiform pustules* When examining pustules of psoriasis under the microscope, they appear as spongiform. This term was labelled in 1927 by Dr Franjo Kogoj (1894-1983), a Croatian dermatologist:”The pustule may be compared to a sponge” *These pustules…
Dr Bruno Bloch (1878-1933) was a Swiss dermatologist who created the dermatology department in Zurich. He described incontinentia pigment with the US Dermatologist, Dr Marion Sulzberger But he made his most valuable contribution in pigment research. Indeed he discovered that the synthesis of melanin was due to the action of an enzyme on the amino…
Also known as dermatitis repens, acrodermatitis continua suppurativa is a acral pustular psoriasis considered as an uncommon type of pustular psoriasis. It was described by the French dermatologist Dr François Henri Hallopeau (1842-1919) described this condition in 1890 and named it then: Polydactylitis Continua Suppurativa (French: “polydactylie suppurative et continue”). Thereafter three particular forms were…
Global photographic assessment of men aged 18 to 60 years with male pattern hair loss receiving finasteride 1 mg or placebo. Olsen EA, Whiting DA, Savin R, Rodgers A, Johnson-Levonas AO, Round E, Rotonda J, Kaufman KD; Male Pattern Hair Loss Study Group. J Am Acad Dermatol. 2012 Sep;67(3):379-86. doi: 10.1016/j.jaad.2011.10.027. Epub 2012 Feb 9.…
The prefix comes from Greek: σαρξ = sarx = flesh The word “sarcoma” served initially to give a name to tumors which developed from the “conjunctive tissue” Later, the Hungarian-Born Austrian dermatologist Dr Moriz Kaposi (1837-1902) transformed the word sarcoma into sarcoidosis to designate still badly-defined cutaneous diseases. (Unrelated, his name was heard again in…
The words of origin are: pellis (Latin) = skin aegre (Latin) = sick, diseased …or… aγρa (Greek) = affection, condition This condition can be summarized by the 4 d’s: dermatitis diarrhea dementia death The skin is characterized by the following: photosensitivity of exposed areas erythema accompanied sometimes by skin sloughing, followed by pigmentation and lichenification…
The Greek word of origin is: πιεζειν = piezein = to press The term in English is: PPPP (Painful Pedal Piezogenic Papules) …was described in 1968 by 2 US dermatologists: Drs Walter B. Shelley (1917-2009 and Rawnsley. This condition is mechanical in origin and rarely painful, It is caused by the herniation of fat tissue.…
