As vegetation occurs in many dissimilar dermatoses, in both the benign and the malignant type, the subject of dermatitis vegetans presents a most complex problem. In cases that occur secondarily to some well recognized dermatosis, for example, as in cases of eczema reported by Wende, Pusey, Hartzell and others, the dermatologist's responsibility in differentiation is not so great as in cases of the continued or recurring types, in which grave constitutional conditions must be considered. In 1889, Hallopeau described a benign type of continued recurring dermatitis with vegetations. His article caused considerable controversy, never satisfactorily concluded, regarding the relation of this dermatitis to accepted malignant conditions; even though cases of this type have been reported from time to time, the problem of their acceptance as a clinical entity remains unsolved.
A group of five cases were presented in which Hallopeau described a classic primary lesion at the onset of the
WALLHAUSER HJF. DERMATITIS VEGETANS: REPORT OF TWO CASES OF THE HALLOPEAU TYPE. Arch Derm Syphilol. 1929;19(1):77–88. doi:10.1001/archderm.1929.02380190080006
Coronavirus Resource Center
Customize your JAMA Network experience by selecting one or more topics from the list below.