defluviumn.

1817 J. M. Good Physiol. Syst. Nosol. 501 Baldness. α Simplex. Hairs of the scalp of a natural hue: gradually dying at the bulbs, or loosened by relaxation of the integument. Defluvium capillorum. Sennert. Alopecia simplex. Sauv.

1899 G. T. Jackson Dis. Skin (ed. 3) 93 The variety [of alopecia] called Defluvium Capillorum is that sudden and general fall and manifest thinning of the hair which comes on during or after some severe illness.

1906 Practitioner Nov. 692 All loss of hair is abnormal, and the popular belief in a physiological defluvium is false.

1910 J. N. Hyde Pract. Treat. Dis. Skin (ed. 8) 992 Onychomadesis (..Alopecia Ungualis; Defluvium Unguium; Onychoptosis).—Total and so-called intermittent shedding of the nails occurs, as in the partial form, in connection with systemic affections of a severe grade.

1930 W. J. O'Donovan Hair xii. 123 The defluvium of hair that coincides or follows severe general illness is a matter of common knowledge.

1940 L. McCarthy Diagn. & Treatm. Dis. Hair vi. 553 In cases of sudden loss of hair following a shock, in which the eyebrows and eyelashes are also involved, it may be impossible to say whether we are dealing with defluvium capillorum or with an alopecia totalis.