Abstract
Infectious eczematoid dermatitis of the external ear often presents a difficult problem in therapy. The patient in the following case had a Pseudomonas aeruginosa infection of the external ear which was extremely resistant to treatment until streptomycin was used. REPORT OF A CASE O. K. L., a 51 year old professor, was first seen on Aug. 30, 1945 with an acute eczematoid dermatitis of the canal and pinna of the left ear. Culture revealed a pure growth of Ps. aeruginosa. He was given the usual instructions for care of the ear, was told to avoid soap and water and was given 3 per cent salicylic acid in 70 per cent alcohol to apply locally twice daily, with application of a 3 per cent ammoniated mercury ointment at night. In addition he was given 50 r. of superficial roentgen ray therapy. Because he did not improve under this therapy, he was
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