Dolberg, who also plays for French club Nice, said in a message posted on Instagram that he doesn’t think the disease will affect his playing career.

Denmark has already qualified for next year’s tournament with eight wins in Group F.

Dolberg said he was diagnosed with Type 1 diabetes.

“I am honestly relieved to finally have discovered the reason for feeling a bit off the last couple of weeks,” Dolberg wrote.

“Also I’m extremely happy that the doctors could tell me that with the right treatment, it will have no effect on my football career!”

The 24-year-old Dolberg joined Nice from Ajax in 2019. He has scored three goals in nine matches this season but had been struggling in recent weeks.