Are you suffering from Rosacea? OR Do you have healthy skin without any history of rosacea? Stanford School of Medicine is conducting a study on "Genetic Basis of Rosacea" and is looking for adult participants. Requirements for study participation are: • Clinical diagnosis of rosacea with bumps (subject age >= 30) OR • Healthy skin without history or current condition of rosacea (age >= 60) Other requirements: -not pregnant or nursing -fair skin type -of European descent (all 4 grandparents) -able to provide ~3 teaspoons of blood -able to donate a small skin sample (optional) PLEASE CALL research coordinator Junie Kim at (650) 498-6361 or geurimk@stanford.edu for more information or to enroll in the study.