Which antihistamine is best for a toddler with urticaria?

[SwalisWantsaPeacefulChristmas]

DD gets urticaria from time-to-time (as do I) particularly when she has had a temperature. She's having quite a bad bout of it at the moment and I'm not sure which antihistamine to give her. Anyone in the know about who can help?

[alibobins]

Ds has piriton for his allergies which causes urticaria and it works pretty well for us.

[NotBigJustBolshy]

Piriton - recommended for chickenpox too.

[Spoo]

Doesn't Medised have antihistamine in it? I have urticaria too.