Sign of dehydration include the dry or sticky mouth, lethargy, decreased urinary output (or darker in colour), sunken eyes, sunken fontanelle (soft spot on infant's head) and headache.
Seek medical advice if your condition worsens or diarrhoea persists for more than:
- 6 hours in babies under 6 months old
- 12 hours in children under 3 years
- 24 hours in children 3-6 years
- 48 hours in adults and children over 6 years of age.