Image source, Getty ImagesImage caption, TreVeyon Henderson has played six times for the Patriots this season. TreVeyon Henderson says "a series of unexplained neurological symptoms", which resulted in him being admitted to hospital, are the reason for his absence for the New England Patriots. The 24-year-old running back was listed on his side's injury report on 29 October with an illness and missed the win against the Miami Dolphins last weekend.