This may or may not help anyone else but it certainly worked for our 10 yr old son, who developed facial tics around the eyes about 6 weeks ago during summer travel. No idea what caused it but here is what we did to address them. This regimen started in Week 2 when he got home. Improvement started showing in Week 3 and his tics completely stopped in Week 5.
Back and head massages right before bedtime everyday
Acupuncture once a week for two weeks
Open air sports activities everyday
2 times a day- fruit juices mixed with multivitamin powder (for B complex) and magnesium citrate powder. Best to research appropriate dosages
Hope this helps.