Vitamin D [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Please note, this management does not treat the condition itself. It may mildly help in preventing some symptoms, and even then has insufficient evidence to back up this claim at present. Please note, this acts as a preventative treatment, and not necessarily symptomatic relief.

Recommendation: No recommendation. There is insufficient evidence to support claims that Vitamin D can help to prevent autism.

Grade of Evidence: Very low quality of evidence.

Hyperbaric Oxygen Therapy (HBOT)

Not recommended.

Recommendation: Strongly against. Available evidence shows that HBOT is not useful in treating autism and can have harmful effects.

Grade of Evidence: Moderate quality of evidence.

Music Therapy [11, 12, 13, 14]

Recommendation: Weakly in favor. Studies show that music therapy may be beneficial for people with autism, particularly children.

Grade of Evidence: Low level of evidence.