Hard lump behind DD's ear

[Pennies]

She's got chicken pox at the moment so is this linked? What could it be - a gland? I didn't think think there were any behind the ears - it is quite pronounced.

There's something called mastoiditis which presents like this. Worth checking with your GP.

swollen lymph glands
Very common when ill

more info here

dd always used to get this when she had a lergy

Thanks for these. Saggars / CD the lump does feel like it's on the mastoid bone. Could that still be swollen glands? She says it doesn't hurt and hasn't had any ear infection that I know of but then she's had quite a full on cold as well recently which is on her chest and added to that the chicken pox. Poor little thing.