Diseases & Conditions Archive

Ignoring symptoms of this carpal tunnel syndrome can lead to permanent nerve damage.

First, you may notice tingling or numbness in your fingers that comes and goes. Over time, the sensations may get worse, lasting longer or even waking you up at night. Eventually the pain and numbness might even make it hard to grip things like a fork, a pen, or other objects.

If you're having these symptoms, it could be carpal tunnel syndrome, which occurs when the median nerve — which runs down your arm and into your hand — is compressed by a ligament that crosses over it as it passes through a narrow space in the wrist known as the carpal tunnel.

Even after cataracts are successfully removed, a new problem may bring back the same symptoms.

When the clear lens inside your eye becomes cloudy, it's called a cataract. Cataracts are a common cause of poor vision in older age, with symptoms such as blurry vision and the appearance of halos around lights. Doctors can restore your vision by removing the cloudy lens and replacing it with an artificial lens implant.

But sometimes a side effect of the procedure triggers the return of cataract symptoms. The side effect is called posterior capsule opacification, also known as a secondary cataract. "This affects about a third of people who have cataract surgery. It's one of the reasons we ask people to come back for follow-ups," says Dr. Roberto Pineda, a cataract surgeon at Harvard-affiliated Massachusetts Eye and Ear.

News briefs

About half of all people in the United States living with a diagnosis of HIV (human immunodeficiency virus) are age 50 or older. But new data from the CDC suggest most Americans have never been tested for the virus (which causes AIDS, the late-stage phase of HIV infection). According to the June 28, 2019, Morbidity and Mortality Weekly Report, less than 40% of people in the United States have had an HIV test, even though the CDC recommends routine testing at least once for everyone age 13 to 64. The CDC notes that older adults sometimes aren't tested for HIV because they don't consider themselves at risk for infection or because their health care providers don't offer them the test. Older people may also mistake late-stage HIV symptoms, such as weight loss and frequent illness, for signs of normal aging. Those symptoms occur because HIV attacks the body's immune system. But a delay in diagnosis allows the virus to cause more damage. That's unfortunate, since medications can keep the infection from progressing.

If you haven't had an HIV test, talk to your doctor about whether it's right for you, no matter your age, especially if you are sexually active or have had more than one sex partner.

Ask the doctors

Q. My doctor recently told me I have prediabetes. Is this condition reversible?

A. Yes, it is possible to reverse prediabetes. Prediabetes is a condition that affects millions of Americans. The CDC estimates that as many as one in every three American adults has the condition, which is defined as having blood sugar that is elevated, but not high enough to meet the threshold for diabetes. Left untreated, prediabetes can progress to diabetes, a condition in which your body is not able to absorb glucose for energy properly, causing blood sugar to rise. If it's not managed properly, diabetes can lead to a number of health problems, from heart attack and stroke to blindness, kidney problems, and infections, among others. But making some lifestyle changes can reduce the risk that your prediabetes will develop into diabetes.

PrEP (pre-exposure prophylaxis) is a daily medication taken to prevent HIV infection. While multiple studies show PrEP is effective, relatively few of those who might benefit are taking it. Will a 10-year initiative to reduce rates of HIV and a new formulation of PrEP help?

Ask the doctors

Q. I've had endometriosis since I was in my 30s. I'm now approaching menopause. Will my symptoms get better or even go away after menopause?

A. Possibly, but not always. Endometriosis is a condition in which tissue that resembles the tissue that lines the uterus, called endometrial tissue, grows in other locations inside the body. Typically, it grows on structures and organs in the pelvis, such as the ovaries, fallopian tubes, bladder, or bowels. When a woman menstruates, this tissue behaves like the lining of the uterus and bleeds. But because this blood has no way to exit the body, it pools inside. This leads to pain, inflammation, and scarring.

Bacteria and mold can accumulate in various parts of the device. But regular equipment cleaning reduces risks.

Continuous positive airway pressure (CPAP) can be hard to get used to. The mask may feel bulky, or it may feel strange to have air blowing in as you try to breathe. That keeps many people from using a treatment that may, in fact, be a lifesaver (see "What is CPAP?").

People also can be put off because they've heard that a dirty CPAP machine can make you sick. Is that true? "Yes, if you don't clean the machine regularly," says Dr. Lawrence Epstein, a sleep expert at Harvard-affiliated Brigham and Women's Hospital.

Doctors say three recently approved migraine prevention drugs are helping people have fewer headaches.

For people with frequent, debilitating migraine headaches, 2018 brought encouraging news. The FDA approved three new medications — erenumab (Aimovig), fremanezumab (Ajovy), and galcanezumab (Emgality) — the first drugs designed specifically to prevent migraines and reduce their frequency, intensity, and duration.

It was a big development, since other medications used to stop migraines were created to control other conditions, such as seizures, depression, high blood pressure, or an irregular heartbeat. But their side effects (such as weight gain, dizziness, or fuzzy thinking) often cause people to skip treatment.