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Dear Dr. Roach: I have Parkinson鈥檚 disease and balance is an issue. I have been using a cane on the right side, my weak leg side. I have seen videos that say a cane should be used on a person鈥檚 uninjured side.

Dear Dr. Roach: Can you shed light on how vestibular migraines are diagnosed and the best treatment? J.H.

Dear Dr. Roach: We are very fond of our family doctor. I was in to see him the other day, and it came up in conversation that he was going to be getting married this summer.

Dear Dr. Roach: Your recent column featured polymyalgia rheumatica and prednisone.

Dear Dr. Roach: I have a friend whose daughter has an egg allergy. She said her daughter will break out in a rash if she eats anything that even has trace amounts of egg in it.

Dear Dr. Roach: I am a healthy 70-year-old woman. The only prescription medication I take is for dry eyes.

Dear Dr. Roach: I have scleroderma with Raynaud鈥檚 phenomenon, and friends and family members have told me that I might get help from Viagra. Frankly, I hadn鈥檛 read or heard that from either my rheumatologists or dermatologists.

Dear Dr. Roach: I have always read that when you are having your blood pressure taken, your arm should be elevated above your heart. When mine is taken this way, it is normal, around 120/70.

Dear Dr. Roach: I am looking for advice on diet pills. I have tried everything. I eat well, go to the gym and walk, but my meniscus problem limits my walking speed. Since menopause, I have gained 30 pounds.

Dear Dr. Roach: I am an avid hiker, and I live in an area with lots of Lyme disease. I recently developed some fever, headache, shaking chills and dark urine, and just felt awful.