The Lyme Disease Association (LDA) is dedicated to Lyme and tick-borne diseases » The Lyme Disease Association (LDA) is dedicated to Lyme and tick-borne diseases education, prevention, raising monies for research, and patient support. Here you will find information regarding Lyme disease symptoms, Lyme disease treatments and other Lyme resources and educational materials for patients, medical professionals, researchers, educators, and policy makers.