Ludwig Grünwald

Ludwig Grünwald (10 February 1863, Vienna – 11 August 1927) was an Austrian born, German internist and otolaryngologist.

He studied medicine in Munich, where after graduation, he opened a practice in internal medicine. He became a specialist in the field of otorhinolaryngology, being credited as the first physician to attempt surgery for the treatment of nasal suppuration and disease associated with the ethmoid and sphenoid bones.

Along with internist Richard May (1863-1936), he developed a solution that later became known as the May–Grünwald stain, a stain used for peripheral blood film and bone marrow. His books on diseases of the larynx and on nasal suppuration have been translated into English.

Aside from otolaryngology, he is also remembered for his discovery of a large ecchymosis located in the umbilicus associated with acute pancreatitis, the Grünwald's sign. Provided by Wikipedia