There is sometimes a collection of bloody serum between the skin and cartilage of the ear, extending the entire length of the flap from tip to base. The fluid is enclosed within a membranous sac. The swelling is caused by constantly flapping the head, and sometimes it is found in association with canker. The swellings are hot and soft to the touch, and more or less tender.

* For the dose, etc., see "Introductory Remarks."

Treatment

The treatment is to slit up the sac from one end to the other, and when the fluid has all run out, to insert between the edges of the incision a dossel of lint soaked in Calendula lotion.* The suppurative process will soon be established, and the walls of the sac will gradually coalesce and become adherent.

* See Appendix.