Newcastle United's injuries are creeping up again following a few fresh blows.
Anthony Gordon picked up a knee injury during Newcastle's 3-2 defeat at Chelsea on Monday night, a game which also saw Dan Burn forced off after falling on his back.
Reflecting on Gordon's injury, Howe added: "It's unclear what the injury is which can always add a more negative feeling because we want clarity.
"Hopefully, we can give him that in the next couple of days and we can get him seen to. Of course, he'll be disappointed to go off."
Harvey Barnes was ruled out for the trip to Stamford Bridge after picking up a hamstring injury in the 3-0 win over Wolverhampton Wanderers while Kieran Trippier missed the match after suffering a calf injury in the same match.
Newcastle have now welcomed Matt Targett back from injury after four months out with a hamstring issue but the left-back didn't get on the pitch at Chelsea. Elsewhere in Newcastle's squad, Nick Pope is closing in on a return from a shoulder injury after three months out.
Joelinton and Callum Wilson are also out injured while Sandro Tonali is banned until August.
Next up for Newcastle is a trip to Manchester City in the FA Cup quarter-final on Saturday (5:30pm kick-off).
Here is Newcastle United's current injury list and expected return dates...
1. Matt Targett (achilles)
Targett has been missing since picking up a hamstring injury against Man Utd back in November. He has featured on the bench in their last couple of outings before dropping out v West Ham and Everton in what is understood to be a minor setback in his recovery. Expected return: Tottenham Hotspur (H) - 13/04
2. Kieran Trippier (calf)
Trippier was forced off during the 3-0 win over Wolves with a calf injury. He has since been ruled out for over a month. Set for another couple of weeks out at least. Expected return: Crystal Palace (A) - 24/04
3. Nick Pope (shoulder)
Nick Pope dislocated his shoulder against Manchester United in December and required surgery. Eddie Howe has said the goalkeeper is still a number of weeks away and isn't expected back until 'late April'. Expected return: Sheffield United (H) - 27/04
4. Tino Livramento (ankle)
Livramento picked up a twisted ankle injury at Chelsea which ruled him out for the Manchester City trip. He returned against West Ham United before suffering another ankle injury which will keep him out for another couple of weeks. Expected return: Burnley (A) - 04/05