You bet there is. I've been hearing more and more about successful treatments with the use of a friendly bacteria named Lactobaccilus Reuteri, a star player in many probiotics. It has proven effective in eradicating H. Pylori, the criminal-bacteria culprit that eats away at the stomach wall and causes ulcers. L. Reuteri has also done a valiant job in overcoming the Clostridia infection that is so highly correlated to autism and the reason that so many autistic kids suffer from constipation. Consult a good naturopathic doctor and ask him for more information on the subject.
I often recommend that parents of autistic kids put them on a GFCF (gluten-free-casein-free) diet, for this also eases all types of autoimmune symptoms that are also related to autism.
The next time someone curses you and tells you to "eat poop", smile back, for Hashem will turn this curse into a blessing. Conventional medicine won't tell you about FT (fecal transplant), but it is a strong ray of hope. Here's how: Imbalances in the gut microbiome ― the community of trillions of bacteria living in the digestive tract ― have been linked with mental and neurological disorders, including anxiety, depression, obsessive-compulsive disorder and Parkinson’s disease. While friendly bacteria are our best friend, the unfriendly types that often take over the gut wreak all sorts of havoc to our health. FT, by returning the gut's regime to the friendly bacteria, can literally reboot a person's health.
Many of modern society's ailments are due to the garbage our bodies ingest that destroy our microbiome, our desirable microbial population in the gut that that protects us against germs, breaks down food to release energy, and produces vitamins. The main culprits are as toxins, air pollution, antibiotics, medications, processed foods and parasites. Often, we're too sterile and use soaps, sprays, cosmetics and chemicals that kill off good bacteria as well. That's why the best thing a person can do is to live and eat naturally.
Disclaimer: all the above does not purport to be a cure or solution to any ailment, but as food for thought and for further investigation. There truly is no despair and there's always hope. Don't ever forget that above and beyond our efforts, prayer alters nature!