The McMahan family will hold its 4th annual "Lemonade Stand for Rett" outside the family's residence at 272 Fairfield Beach Road on Saturday, Aug. 20.

The fundraising event, which will start at 1 p.m., will raise money to benefit Rett syndrome research and the International Rett Syndrome Foundation through donations and the sale of lemonade and cookies. The annual fundraiser was begun by siblings Keegan and Avery McMahan. Their sister, Keilly, has Rett syndrome, a rare neurological disorder seen primarily in females that causes loss of speech, hand use and the ability to walk. Victims of Rett syndrome also suffer from breathing abnormalities, seizures and scoliosis.

In the last three years, the lemonade stand has raised $6,250 for the foundation, of which Christian McMahan, Keilly's father, is a board member.

Visit www.rettsyndrome.org for information on Rett syndrome and donations.