DD has literally bitten her fingernails down to the nail bed, they regularly bleed and are raw looking she has also in the past couple of months began licking things - started by licking a mirror in a changing room and its getting worse. She licks trolleys, my coat, my skin, her skin, windows etc. She also occasionally spits for no reason - only today I have realised the spitting is probably sensory too. I am wondering if chew toys may help this? Or any other suggestions very welcomed!
Chewigem are very good, and if you find them in fb there's a discount code. My youngest stopped chewing through his sleeves after we bought him a chewy. I don't know if it would help with the spitting and licking though. (As an aside, if anyone knows of anything to replace/stop spitting, I'd love to know, ds2 is spitting constantly and it's driving me mad!)
Have you tried the bitter nail varnish? The majority of people bite their nails when young (and some of us into adulthood). Attention to nails often reduces things. File nails, clip them, rub oil into cuticles (coconut oil is excellent) What about liquorice root or something less yucky if it goes down the back of your sofa?
Ds does it too though for us it's when he isn't happy.