The term selfie was crowned the 2013 word of the year, and Ellen DeGeneres' selfie with Hollywood celebrities broke a Twitter record at the recent Oscars.

But has the popularity of selfies, self-portrait photos, gone to people's heads, literally?

A Canadian lice expert thinks group selfies could be one reason she's treating up to 10 per cent more teens.

She said lice spreads through head-to-head contact.

Dawn Mucci with Lice Squad Canada said many teens have the long, clean hair lice love best.

And new strains of "super-lice,” resistant to chemical treatments, make getting rid of them trickier.

Winnipegger Sarah Phillips holds the only certification in Manitoba for one alternative method.

She's trained to comb through each strand of hair, and nix nits by hand, which she does through her business Slice of Lice.

She said lice aren't nice but they do happen, so the best advice is spread the word, not the lice.

The Winnipeg Regional Health Authority said its public health members have been involved in some education but, as it is not a health concern, it isn't something that is actively tracked either by the province or the region.