The star's daughter Ruby suffers from Breath Holding Spells (BHS). The two-year-old can lose consciousness for up to a minute.
'She will hold her breath until she passes out - the first time it happened it was absolutely horrendous,' Charlotte, 23, tells the Daily Mail.
'I took her to hospital and they said some children do this until the age of about three when they grow out of it.
'We've been taught to bring her round by spraying her face with water or blowing on her face. Every time it's happened she's been fine afterwards but it causes Gavin and I a lot of worry.'
Charlotte and boyfriend Gavin Henson, 27, also have a nine-month-old son, Dexter.
More info on Breath Holding Spells (BHS)
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