Yes, your hilarious friend can still be depressed. This 'high-functioning' depression is often easy to miss. Depression looks different on everyone, and never seems to appear quite how you thought it would (a bit like an ASOS blouson).
There are a staggering nine classifications of depression defined by psychiatric associations, but 'laughing on the outside and dying on the inside' hasn't made it to the list yet. A lot of the funniest people we know are often (and really, it must be stressed that I don't mean always) depressed.
Humour and laughter can often come from a place of darkness, and comedy is the resulting wall put up between the 'performer' and their audience; if someone's always cracking out jokes and making us all laugh, then they must live a smiling and hilarious life too, right? Not so much.
The link between humour and depression is well documented, and was spoken about at length when comedian Robin Williams took his own life in 2014. People wondered 'what did he have to be so sad about?' as they imagined our loveable Mrs Doubtfire and Aladdin's Genie bouncing around in his mansion, drumming up a side-splitting impressions routine before his staff of 27 and shelves of awards.
Robin Williams perfectly summed up the relationship between mental illness and comedy, saying: 'I think the saddest people always try their hardest to make people happy because they know what it's like to feel absolutely worthless and they don't want anyone else to feel like that.'