There are 2 main avenues that provide the most help to those with autism. Chiropractic Neurology and Nutrition/Detoxification. For those with allergies, only the nutrition/detoxification is necessary.
Chiropractic Neurology. I describe this as occupational therapy that is VERY targeted to the development of deficient portions of the brain through very specific physical exercises.
Cranial Sacral. This has to do with the bones of the skull. This can be extremely beneficial in some, but not all cases and heavily depends on the skill of the practitioner.
Nutrition and Detoxification
Natural Health Practitioners. This encompasses a huge amount of options with different philosophies and lines of thought behind them. It includes everything from chiropractic to homeopathy, essential oils, acupressure/acupuncture, nutrition, and herbalists. Natural alternatives is my area of choice because it is natural. My son absolutely could not handle anything pharmaceutical, prescription antifungals regressed him horribly and it took about a year to regain what he lost the one or two months on them. It is also the area most difficult to find excellent, qualified practitioners that is why I will include information about DAN doctors. Again, some practitioners in these fields are more qualified than others and more than any other area, choices and options abound.
NAET and BioSET. NAET (Nambudripad’s Allergy Elimination Technique), BioSet (Bioenergetic Sensitivity and Enzyme Therapy) and similar types of treatments are completely non-invasive methods for treating and eliminating allergies. They are based on a similar foundation as acupuncture and acupressure. Understand that this is a stop-gap measure to get nutrition accepted in the body so other root causes can be addressed. If digestive issues are not healed in other ways, the allergies will return.
DAN! Doctors. DAN (Defeat Autism Now). These are medical doctors who have taken some extra training in treating autism. They view autism as a biomedical issue, meaning that it is secondary to other medical issues going on in the body, not as a primary neurological condition. Some have more training specific to autism than others and they can vary a lot in how they view things and what they do, so check them out carefully before choosing. There are many many protocols and treatment options within this field from which to choose. For more on this, Generation Rescue is a good option.