DS has just turned 4 and 3 weeks ago (2 weeks before the birthday) started biting his nails, totally out of the blue. Now his thumb in particular is really sore because it's chewed to pieces. Should I
a) get that stuff that tastes foul from the chemists, paint it on his nails and hope he quits sharpish
b) chill out and try not to cringe every time I see those fingers going in or
c) do something else based on your valuable wisdom??!
Help!!