The concerning update on Lawes came after Northampton swept aside Bristol at Franklin’s Gardens
Northampton boss Phil Dowson says that England captain Courtney Lawes continues to have symptoms after suffering a head injury five weeks ago.
The England and Saints forward has not played since September 24, and he pulled out of this week’s national squad training camp in Jersey as he follows required return-to-play protocols.
England kick-off their Autumn Nations Series campaign against Argentina on Sunday week, which is followed by Twickenham appointments with Japan, New Zealand and South Africa.
“He went to see a specialist this week. He will keep going through the process until he feels better,” Dowson said, following Saints’ 45-31 Gallagher Premiership victory over Bristol at Franklin’s Gardens.