Austin is Charlie Fiduccia's grandson and was recently diagnosed with an uncommon brain condition called Chiari malformation. See below link to a Mayo Clinic site which explains the condition in more detail. Austin was experiencing headaches which led to an imaging test which detected the condition. This is a condition which will need to be monitored over time.
https://www.mayoclinic.org/diseases-conditions/chiari-malformation/symptoms-causes/syc-20354010