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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.

Dear Dr. Roach: I鈥檓 a 74-year-old woman who smoked a pack a day for 40-plus years, having quit smoking about 18 years ago. As a precaution, I asked my primary doctor to order a screening CT scan, knowing that I鈥檓 a candidate for lung cancer.

Dear Dr. Roach: I was diagnosed with COPD a year and a half ago and have several questions. I seem to be unable to get answers from my pulmonary doctor, as he is always busy and doesn鈥檛 have a lot of time to spend with me.

Dear Dr. Roach: How are sleep apnea, sighing and heart failure related? Recently, I was told that I have severe sleep apnea and that I must use a CPAP machine. I have noticed that during the day I frequently take a spontaneous deep breath.