Horner’s syndrome Directory References Discover The 10 Greatest Basketball Players of All Time Pablo Escobar: 8 Interesting Facts About the King of Cocaine What If the President Is Impeached? What State Is Washington, D.C. In? 10 Great Sports Rivalries 7 Everyday English Idioms and Where They Come From History of Technology Timeline Contents Horner’s syndrome medical disorder Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:occurrence of ptosis In ptosisIn a disorder called Horner syndrome, a slight ptosis occurs in association with a smaller pupil and decreased sweat production on the affected side. Read More