Q:My baby has a sore bottom that comes and goes.Is it teething or something else?

A:Most babies get nappy rash from time to time.The main causes are prolonged contact with wee or poo,rubbing or chaffing of the nappy,irritation from soaps,detergents or baby wipes,and diarrhoea or general illness when your baby is taking less fluid and his urine is more concentrated.Teething in itself won't cause your little one's sore bottom,so keep an eye on things,as it may be the beginning of an illness.Prevention is the best treatment,so be vigilant and change wet or dirty nappies more frequently - this may be as much as 10 times a day in young babies.Take extra care in washing the nappy area,using plain water and drying in all the creases carefully.Let your baby be nappy free regularly throughout the day to help air circulate,and try a barrier cream to protect the skin.Finally,with recurring nappy rash it's worth considering if there's a thrush infection.Speak to your doctor,who can prescribe a fungal cream,which will clear up the infection.