The present study is offered as an explanation of why some cases of tinea of the feet are difficult to cure and why some relapse repeatedly after apparent cure. It is not claimed that all of the difficult and relapsing cases are of this nature, and the number of cases studied is too small to be used as a basis for statistics. The series proves definitely, however, that tinea of the toenails is commonly associated with tinea of the feet, and it is reasonable to assume that the diseased nails serve as foci of infection from which the disease, under favorable circumstances, may spread to the skin. The resistance to treatment of tinea of the nails is notorious.
Such articles as we have seen that deal with tinea of the nails have given us the impression that the descriptions were of the fingers and not the toes, probably because patients
WILLIAMS CM, BARTHEL EA. TINEA OF THE TOE-NAILS AS A SOURCE OF REINFECTION IN TINEA OF THE FEET. JAMA. 1929;93(12):907-910. doi:10.1001/jama.1929.02710120019006