In spite of the fact that the pubic louse (Phthirius pubis) may be found on the eyebrows and on the eyelashes of patients with an extensive infection, involvement of the scalp is extremely rare. There are only some 10 cases reported in the foreign literature.1 Tauber2 has suggested that cases may have been seen and the condition considered merely as ordinary infection with Pediculus capitis because the parasites were not examined carefully. Lavender3 has mentioned a case of such an infection in an adult. Sabouraud,4 a great authority on diseases of the scalp, wrote that "one never finds this [pubic louse] on the scalp." The reason for this difference in localization is not known at present. One theory is that this particular louse has become adapted to growing in areas where the apocrine form of sweat gland is found.1f The ciliary involvement is explained by
GOLDMAN L, FRIEDMAN LS. INFECTION OF SCALP AND CILIA WITH PHTHIRIUS PUBIS IN A NINETEEN MONTH OLD BABY. Am J Dis Child. 1941;61(2):344–346. doi:10.1001/archpedi.1941.02000080134017
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