Connie Mcgrath, 32, administers Garath Oldham's Applied Behavioral Analysis. The one on one interaction helps students like Garath, 3, who cannot play with other children, speak more and express himself.

Photo: Sydney Wilmer, LoudounExtra.com

Casandra Oldham prays with her autistic son Garath, 3, at their home in Loudoun County. Garath cannot pronounce "amen" at the end of his prayer, so closes with "all done."

Photo: Sydney Wilmer, LoudounExtra.com

Casandra Oldham plays with her 22-month-old autistic son Korlan in their home near Lansdowne Resort. Korlan's illness was likely triggered by toxin's in the environment, his mother said.

Photo: Sydney Wilmer, LoudounExtra.com

Casandra Oldham says she is so lucky that her two autistic sons, Garath, 3, and Korlan, 22-months, are affectionate, something that is unusual among autistic children. Here, the three play in the Oldham's home near Lansdowne Resort.

Photo: Sydney Wilmer, LoudounExtra.com

Casandra Oldham prepares Gluten free and Casin free brownies into small bites for her son Garath's Applied Behavioral Analysis therapy. By rewarding him for participating, she hopes Garath will learn to be more communicative.

Photo: Sydney Wilmer, LoudounExtra.com

Garath Oldham, 3, was diagnosed over a year ago with autism. Earlier this year his family discovered it was likely triggered by exposure to toxins.

Photo: Sydney Wilmer, LoudounExtra.com