The object of this paper is to consider the points of interest in some of the commoner diseases of the skin, which are accompanied by the sensation of itching, with special reference to their differential diagnosis.
Prurigo is a rare disease, and the only reason for including it here is properly to place it and practically eliminate it. A disease productive of itching of varying intensity is one which sooner or later compels its host to seek for relief. Patients may carry for years without complaint cutaneous eruptions of different kinds that are not productive of physical discomfort, especially when these manifestations are hidden beneath the clothing; but when the peace of mind is disturbed by constant or intermittent suffering incident to the subjective symptom, itching, the physician is sought in the hope of relief.
The terms prurigo, pruritus and itching have been used so often interchangeably that
ORMSBY OS. A CONSIDERATION OF PRURIGO, PRURITUS, AND SOME COMMON ITCHING DERMATOSES.. JAMA. 1906;XLVI(21):1595–1600. doi:10.1001/jama.1906.62510480023001e