"He has a complex partial seizure disorder, which happened to him when he was 7 months old, he had meningicoccal meningitis, and when he was two years old he started having seizures," his mother explained.
Even in this picture Shane Potter is wearing a medical bracelet to warn the public, police and other emergency workers about his condition.
"Sometimes he can just go off, you know, it just depends on what kind of seizure he has."
Monday afternoon police arrested Shane Potter near a bus stop at Culebra and 36th Street in San Antonio.
"My biggest concern right now is he's going to have seizures while he's in jail."
A police report says firefighters were trying to help him, after getting a call for someone having a seizure. Shane Potter is accused of kicking a firefighter, once in the groin and once in the stomach.
"He's 25 years old, but he's not 25 year's old," his mom said of his mental state.
In 2006, Shane Potter was arrested for assaulting a security guard. The charges were reduced to disorderly conduct and dismissed after he served probation. Like yesterday, he had just had a seizure.
The Epilepsy Foundation keeps a close eye on these cases. They say too often a seizure can be mistaken for criminal behavior.