I’m sorry to hear that you are going through this with your daughter.  The answer to this is not simple nor brief.  I have seen this happen many times and there were great results that at times lead to full recovery.  However, it is not always the case.  There are many interventions that need to take place at the same time in order to have your daughter get back on the right track.  The gold standard for ASD is behavioral therapy known as ABA therapy.  It needs to be done in all environments (home/community/school).  You can find plenty of information on the net for that.  There are other interventions like speech therapy, occupational therapy, physical therapy if needed, RDI, biomedical intervention, functional neurology … etc.  I have to say from my professional experience and with clients the ones that pursue both ABA and biomedical interventions show the most promising results.  Wish you all the best and feel free to reach for any questions or if you want to be connected with any resources near your area.

My son was very developmentally delayed and also regressed (lost speech and eye contact) around 22 months. He did get it back 😊. It was very slow and many years of echolalia/repetious phrases. In addition to the traditional therapies we did a lot of anti-inflammatory nutrition (like omega 3 fatty acids). We found out when he was 11 that he has celiac disease. A gluten-free diet helped a lot with concentration in class. He’s a sophomore now and no longer has support services in the classroom. He does still have an IEP and a resource teacher for study hall.

Thanks to you all for your support and answers. They are really helpful to me that am not in this alone. She started early intervention and is now enrolled in cpse prek. The teachers are really doing a good jod with her. She have ot and sp. I believe all will be well. Thanks and i wish you all good luck in your various journeys. May the Almighty God intervene for all our children.

Regression is fairly common with these children. Not all children regress, but it is dis-heartening for the ones that do. Some of these children, with therapy regain skills over time, but there is no definitive answer. The sooner you get her assessed and get her involved with the appropriate interventions, the better. Good luck and let us all know how you and your daughter are doing.

The same exact thing happened to my son. He's going on 11 yrs old this month. He started saying words at around 8 years old. He has a vocabulary of about 60 words now. He still doesn't speak in full sentences but his speech is improving every day. Good luck