Newsweek reporter Kurt Eichenwald, who has written many critical stories about President-elect Donald Trump since last month's election, is claiming that people on Twitter have given him seizures by sending him tweets containing GIFs of strobe lights. Strobe lights can cause seizures for people who have epilepsy.

Speaking with George Stephanopoulos on "Good Morning America" on Tuesday, Eichenwald said a Twitter user late last week sent him a "multicolored strobe that was going at a speed that was designed to cause a seizure, and it succeeded."

That tweet, sent by a Twitter user with the handle "@jew_goldstein" (which has since been suspended), featured the strobing GIF with text on top of it that said, "You deserve a seizure for your posts." Eichenwald said his wife responded to the tweet and photographed it for evidence.

Eichenwald claims other Twitter users have caught on and are also sending him strobes through the social network.

"I can't look at my Twitter feed anymore," Eichenwald said on GMA. "Apparently a lot of people find this very funny. A lot of people who identify themselves as Trump supporters are loading up my feed with more strobes."

Eichenwald says he is working with Twitter and pursuing legal action against people sending him strobes. And on Tuesday, Eichenwald used the service to warn trolls to back off.

We reached out to Newsweek and Twitter for more information. You can watch Eichenwald's segment on "Good Morning America" below.