Pityriasis Rosea from Gibert for short

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Pityriasis rosea of Gibert	Dermatosis of an erito-squamous nature characterized by erythematous-scaling lesions; the course is benign and self-limiting. Pityriasis is easily resolved
Etymology of the term: pityriasis rosea of Gibert	Pityriasis: literally means "bran" "Rosea" name derives from the far 1800: Dr. R. Willian characterized the disease as anulata roseola ; CM Gibert was the first dermatologist who in his book dealt extensively with the clinical-symptomatic picture of the disease, attributing to it the current name of pityriasis rosea
Pityriasis rosea of Gibert: epidemiology	Rather common dermatosis, which mainly affects individuals aged between 10 and 40 years Peak of patients suffering from pityriasis rosea of Gibert during the spring and autumn season Pityriasis rosea: 2% of all dermatoses Incidence equal to 0.14% (in the general population) Recurrent forms of pityriasis: 3% of affected patients 25% of affected individuals: pityriasis rosea generates itching
Pityriasis rosea of Gibert: clinical and symptomatic picture	Onset: typical reddish macula, called macchia madre or Gibert medallion. The spot appears roundish, with a diameter of 1-3 centimeters; the contours are rather defined, although they tend to flake Evolution of dermatosis: appearance of new satellite-like spots ( daughter spots ) that spread from the mother spot
Pityriasis rosea of Gibert: affected anatomical areas	The main target of the disease is the trunk, but it can also spread to the arms and scalp. The involvement of legs and face is rare
Pityriasis rosea: histopathology	Minor parakeratosis Disappearance of the spinous layer of the epidermis spongiosis Superficial edema with infiltration of lymphocytes, neutrophils, histiocytes and eosinophils Capillary dilation
Pityriasis rosea of Gibert: etiology	Refuted hypotheses of the late nineteenth century: The pityriasis rosea of Gibert is related to syphilis Close correlation between fleas and pityriasis rosea In the nineties of the twentieth century (hypothesis denied) Pityriasis rosea of Gibert due to a bacterial or parasitic infection In our days: The most likely etiopathological assumption is attributed to two Herpes virus strains (HHV6 and HHV7) Frequent contact with particular substances (eg chemical agents, dust, etc.) could cause dermatosis
Pityriasis rosea of Gibert: differential diagnosis	The diagnostic differentiation of pityriasis rosea is necessary; the pityriasis rosea of Gibert must be distinguished from: Pityriasis versicolor, chronic lichenoid pityriasis, lichen planus, guttate psoriasis, taxidermy, Tinea Corpis, seborrheic dermatitis and secondary syphilis
Feasible diagnostic techniques	Physical examination In-depth serological examination to exclude syphilis Microscopic investigation for the isolation of mycetes
Pityriasis rosea of Gibert: classification	Pityriasis giant rosea Pityriasis rosea inverted or inverse Pityriasis rosea circinata and marginata of Vidal Pityriasis rosea vesicular Pityriasis rosea urticata Purpuric-hemorrhagic pityriasis, pityriasis lichenoid, and pustular pityriasis
Pityriasis rosea of Gibert: therapies	Generally, targeted therapies are not necessary, since dermatosis tends to regress spontaneously in about 4-5 weeks from onset Administration of antihistamines per os Topical application of cortisone-based ointments Menthol based creams Application of creams containing local anesthetics Creams and ointments with an emollient action, a practical aid against dry skin Application of detergents with a slightly acidic and very moisturizing pH