The 44-year-old is currently the coach of Spurs’ U23 side.
"We can confirm that Ugo Ehiogu is currently in hospital after collapsing at our Training Centre earlier today," Spurs said in a statement.
"Our Under-23’s coach received immediate treatment on site from our medical staff before being transferred to hospital by ambulance.
"Everyone at the club sends their best wishes to Ugo and his family. We shall continue to provide updates when we have further information."
Ehiogu, who spent most of his career at Aston Villa where he won the League Cup in 1996, gained four England caps.
Read the full article on eurosport.co.uk: Former England defender Ugo Ehiogu hospitalised after training collapse