Recently Dr. Richard Sutton Jr.1 wrote a note on the incidence of psoriasis. In his note he stated that he found the incidence of psoriasis to be 0.2 per cent. He expressed the opinion that Gahan's2 figure of not less than 1 per cent is too high. He also stated that psoriasis is far down on the list of common diseases of the skin in contrast to its position second only to acne in order of frequency in the list of Bereston and Ceccolini.3
I should like to point out the fact that in the list of Bereston and Ceccolini there were 55 cases of psoriasis in 20,000 men, which is an incidence of 0.27 per cent, a figure which varies by only 0.07 per cent from Dr. Sutton's own figure of 0.2 per cent.
The fact that psoriasis was second in frequency and not farther down
BERESTON ES. INCIDENCE OF PSORIASIS. AMA Arch Derm Syphilol. 1950;62(5):716–717. doi:10.1001/archderm.1950.01530180105030
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