​Dermatology - Guttate Psoriasis

​Dermatology - Guttate Psoriasis
Psoriasis has a prevalence of 1.5-2% among the population and typically manifests as a long-lasting condition. Polygenic predisposition and triggering environmental conditions, such as bacterial infection, trauma, or medicines, contribute to the development of the condition. The highest occurrence of this condition happens at the age of 22.5 years (with youngsters typically experiencing symptoms around the age of 8), and there is also a second wave of onset that typically happens at the age of 55. Early beginning of psoriasis is indicative of a more severe and persistent condition, sometimes accompanied by a familial predisposition.
Guttate psoriasis is triggered by an acute streptococcal infection. Flares and a psoriasiform drug eruption can be caused by systemic glucocorticoids, oral lithium, antimalarial medicines, interferon, and β-adrenergic blockers.

Guttate psoriasis is a type of skin condition characterized by the sudden appearance of many tiny lesions that are inflamed. This type of psoriasis has a higher likelihood of resolving on its own without treatment. This kind of psoriasis is infrequent, accounting for less than 2.0% of all cases. Pruritus is a prevalent condition.
Abnormalities
The presence of salmon-pink papules, ranging in size from 2.0 mm to 1.0 cm, may not be initially noticeable but can be observed following scraping. These papules may or may not have scales. The scales are thin and easily detachable, and their removal causes the emergence of little blood droplets (known as the Auspitz sign). The lesions are dispersed and distinct, typically occurring on the torso. They may either clear on their own or persist and develop into long-lasting, stable psoriasis.

The diagnosis is established based on clinical observations and the culture test for group A β-hemolytic streptococcus infection. The differential diagnosis encompasses maculopapular drug eruptions, secondary syphilis, and pityriasis rosea.

Administer antibiotics to combat streptococcal infection. Lesions are most effectively treated with narrow-band UVB irradiation.