need advice--my son has lost all language at 4.5 years-old

[Guest guest]

My son has apraxia & autism. He was verbal prior to autism diagnosis, and lost

all verbal communication. We did lots of therapies & biomedical interventions,

and he gradually gained back about 20 words/approximations. However, over the

past 3 months we have lost all verbal communication. He still has all the

receptive skills, and appears to understand us, and he tries to imitate our

words, but he is unable to do so. Any idea on what may be happening with him?

Is this a regression? due to food infractions? developmental?

I would greatly appreciate any input you may have. We had not made any changes

in supplements or medications during the time that he quit verbal communication.

Thank you,

jen