Frank Bruno: 'I accept I've got bipolar'
Around one in every 100 adults is diagnosed with bipolar disorder or manic depression, which can cause severe mood swings.
Former boxer Frank Bruno has battled with the illness. He talks to his daughter Rachel about the condition and how he used to feel during a manic episode.
Read more: Rachel Bruno explains the effect her father's illness had on her and her family over the years.
Rachel Bruno: My Dad and Me will be broadcast on Tuesday 23 July at 21:00 BST on BBC Three. Or catch up later on BBC iPlayer.