He was responsible for the description of congenital cutaneous candidiasis, originally known as Beck-Ibrahim disease.
The discovery of his association with the Nazi euthanasia program during the World War II resulted in an effort to rename this disease.
[1] The clinic for child and adolescent medicine at Friedrich Schiller University in Jena also chose to change its name from Kinderklinik Jussuf Ibrahim after his Nazi past was uncovered.
[2] In 1886 Ibrahim and his older brother Ali Ramiz went to Munich to study medicine.
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