DEAR ERIC: I had cancer a few years ago and as a result I lost my hair. It grew back in patches, but I still appeared to be bald. I purchased a wig that was my hair color and my hairstyle.

Jocelyn Bioh’s funny, poignant “Jaja’s African Hair Braiding” onstage at Berkeley Repertory Theatre starts at such a fever pitch ... and fascinating hair and wig design is by Nikiya ...