Points: An anachronistic treatment for asthma

Abstract

Hull Royal Infirmary, Hull HU3 2JZ) writes: The interesting paper on clustering in pityriasis rosea by Dr A G Messenger and others (6 February, p 371) tempts me to recount an anecdote concerning my own family. In July 1961 both my daughters, then aged 11 and 10 years, presented classical pityriasis, the younger following the elder by 10 days. My wife, my son, and I were unaffected. This incident has always suggested strongly to me that the disease is probably of virus origin with low infectivity.. ..