Q. I had a white spot on my tongue. An oral surgeon removed it and fortunately it wasn’t cancerous—it was a callous. Now I’ve developed another one in a different place, but my dentist said there’s no need to operate. What could be the cause?

Q. I am 84 years old and have a trigger finger. I have tried exercise, acupuncture, and cortisone shots, none of which have been very effective. I have heard of companies offering stem cell procedures for trigger finger. Is this a valid option?

Q. Although it’s been over a year since her sister died, my wife still seems very sad. She doesn’t go out of the house very much, and says she feels tired. Sometimes, she cries for no particular reason. Is she still grieving or is this something more serious?

Q. Can stress and worry really affect my health?

Q. I am a 79-year-old woman with bladder control problems. I’ve been taking medication for years, but the side effects are quite bothersome. Is there anything else I can do besides take medicine?

Q. What is the best treatment for varicose veins?

Q. Are there any effective medications or cosmetics that will fade age spots?

Q. Have you heard about oil pulling to improve oral health? 

Q. Is hypnosis a legitimate therapy? If so, what conditions can it help?

Q. Is caffeine good or bad for your health? It seems as if a new study comes out every day.

Q. A few years ago I was diagnosed with a skin condition called lichen planus. It went away but has come back three times since then. What could be causing it?

Q. My sense of smell seems to be getting worse as I get older. Is that normal?