Keratoacanthoma: the Australian experience.

Comment is offered on the roughly 50 years experience of Australian clinicians with the various types of keratoacanthoma, and local contributions to knowledge in this area is indicated. The higher incidence in warmer areas, with consequent early acceptance of the entity, is documented. Effects of immunosuppression are recorded, and viral and immunological studies noted. Aspects of special sub-groups, such as multiple and subungual, and of treatment, are briefly discussed, and future areas of research mentioned.