DEAR DOCTOR K: My young daughter will suddenly blink her eyes or twitch her nose repeatedly, for no good reason. The doctor says she has "tics," a condition of her nervous system. Will this go away, and is it serious?
DEAR READER: Tics are upsetting -- both to the person who has them and to the people who see them. We like to feel in control of our world. A sudden, uncontrollable, rapid repetitive movement (called a motor tic) says we're not in control. So it's understandable that both you and your daughter should be concerned.