My dd2 (2.5) has had a persistent cough for ages. Just as we thought it was going away - she's been OK for the last week or so - it reappeared with a vengeance. Non stop coughing all day. It got so bad we took her to A & E and she was given piriton and a nebuliser - but they had little or no effect. Her chest was apparently clear so no antibiotics were given. We just got sent home and told to keep giving her piriton for a further week. But how could it be an allergy if anti-allergy medication doesn't work? This doesn't make sense. If anyone can make sense of this for me I would be grateful