Kodai Senga’s injury-riddled season had another setback, as the right-hander reported discomfort in his triceps again on Thursday.

So instead of throwing a bullpen, Senga got an MRI exam that showed inflammation in the area, according to manager Carlos Mendoza.

Senga will be shut down for three-to-five days and then have to go back to playing catch before he progresses to getting back on the mound.

But first, they have to make sure the shot takes care of the discomfort.

“The good thing is we were able to look at his shoulder and elbow to make sure we were not missing anything and it was just inflammation,’’ Mendoza said. “We knew from the beginning it was gonna take time.”

Senga already skipped a scheduled bullpen session last weekend for the same reason.

The 31-year-old had previously been close to beginning a minor league rehab assignment before he backed off due to some mechanical issues.

After a promising rookie year with the Mets, Senga has missed the entire season since suffering a shoulder strain early in spring training. 

Whenever Senga does get healthy, he’ll need at least a month to build up before he would be able to get back into the Mets rotation.