Felicity' and 'Heroes' actor Greg Grunberg shared why he is suddenly bald in a video posted on his YouTube channel on May 7.

Grunberg, who played Sean Blumberg opposite Keri Russell, Scott Speedman, and Scott Foley in “Felicity” from 1998 to 2002, ...

The actor explained on social media how a knee surgery late last year and Hashimoto's disease triggered his alopecia.

Alopecia, or hair loss, can affect any body part and it can be a temporary or permanent condition, per the Mayo Clinic. It is ...

Related: The Cast of Felicity: Where Are They Now? On Dear Felicity, Speedman told hosts Juliet Litman and Greg Grunberg — who played Sean Blumberg on the series — that he and Foley never ...

The actor expressed his desire to work once again with the Felicity co-creator during an appearance in ... if I was ever insecure about anything," Foley joked. (Or was he joking?) "Greg Grunberg, he ...