11 Facts About Eczema

iStock.com/Anetlanda
iStock.com/Anetlanda

If you’ve ever had to deal with dry winter skin, you may think you know what eczema feels like. But anyone living with the chronic condition will tell you it’s much more than that. Rashes can rear their heads at any time of year, and eczema causes include irritants as mundane as food, clothes, and the weather. Symptoms range from mildly annoying to distracting enough to keep people from getting sleep and focusing on their work. Here are some more facts about eczema causes, symptoms, and treatments.

1. Eczema isn't just one condition.

Rather than describing one specific skin condition, eczema is used as a catch-all term for a group of related conditions. When people mention eczema, they’re often referring to atopic dermatitis: This is a chronic inflammatory condition characterized by dry, itchy red patches that flare up across the body when the immune system overreacts to a trigger. There’s also contact dermatitis, which is when rashes are triggered by irritants coming in contact with the skin; nummular eczema, when rashes are coin-shaped; and stasis dermatitis, when fluid “weeps” out of weakened blood vessels in the skin. Eczema shouldn't be confused with psoriasis: While both are conditions that lead to dry, itchy skin, the latter is an autoimmune condition while the former is primarily caused by allergic reactions.

2. Eczema is sometimes limited to the hands.

Eczema doesn’t have to affect the entire body. Hand eczema comes with many of the same symptoms of regular dermatitis—including chapped skin, painful cracks, red patches, and itchy blisters—but is limited to the hands and forearms. Many people without eczema deal with dry hands, especially during the colder months, so it can be difficult to know when these symptoms are signs of a medical condition. If your itchy, irritated hands can’t be treated with moisturizer alone, ask a dermatologist if you may have hand eczema.

3. It's often genetic.

Your genetic background is a strong predictor of eczema. If both of your parents have it, there’s an 80 percent chance that you will develop it as well, according to the Eczema Association Australasia. A family history of asthma and hay fever is also linked to eczema.

4. Eczema can be debilitating.

A list of symptoms doesn’t begin to capture what the experience of living with eczema is like. The itching and discomfort that comes with it can be so intense that it keeps people up at night, leaving them exhausted and unable to function during the day. Symptoms may be so acute that they’re all the person thinks about, which can hinder their relationships and work life. Others may feel discouraged to go out in public because they’re self-conscious of how their skin looks.

5. It's not contagious.

No matter how much contact you have with someone with eczema, there’s no chance of you catching their skin condition. Despite this, many people will see someone scratching their eczema rashes and assume what they have is just as contagious as poison ivy or chicken pox. And because eczema often runs in families, it sometimes carries the illusion of “spreading” between people who live together.

6. Eczema can be triggered by your environment ...

There are a number of environmental factors that can trigger eczema symptoms. Changes in climate—either to cold, dry conditions or hot, humid ones—may be enough to provoke a flare-up. For many people, chemical irritants are the sources of their rashes. Cigarette smoke, perfumes, household cleaners, shampoos, and fabrics like wool and polyester have all been linked to eczema reactions. That doesn't mean that everyone with eczema needs to avoid these things: The condition affects everyone differently, and an irritant that causes one person’s flare-ups may have zero effect on someone else.

7. ... and stress level.

Even if someone with eczema takes great pains to avoid their environmental triggers, a hard day may be all it takes to make their skin break out. Many people with eczema report exacerbated symptoms when they're feeling stressed. According to the National Eczema Association, eczema sufferers are more likely to be diagnosed with anxiety and depression, creating a vicious cycle for patients who count stress as a trigger.

8. It's connected to allergies.

Eczema is often accompanied by an allergic condition, whether it’s asthma, hay fever, or allergies to food. Up to 80 percent of children with atopic dermatitis go on to develop asthma or hay fever. It’s unclear what the exact relationship between allergies and eczema is, but some medical experts believe that the weakened skin barrier associated with eczema makes it easier for allergens to enter the body, which can in turn impact the immune system over time. Allergens—like pollen, dust, pet dander, and mold— are also triggers for some people with eczema.

9. Scratching makes it worse.

When an eczema flare-up starts to itch, it can be impossible to think about anything else. But scratching a rash is the last thing people with this condition should do. Instead of relieving discomfort, scratching a dry patch of skin can irritate it even further. Sometimes eczema sufferers scratch their skin so much that it starts to bleed, opening the door for potential infections.

10. Eczema is more common in kids.

Eczema affects roughly 11 percent of U.S. children [PDF] and 7 percent of adults [PDF]. Most kids with eczema develop it within the first five years of life, with 65 percent percent of child eczema patients first showing symptoms as infants. Living with eczema can be taxing for both kids and parents—especially when kids can’t stop themselves from scratching their rashes—but fortunately, half of kids with the condition grow out of it by the time they reach their teen years.

11. It can't be cured—but it can be treated.

There’s no cure for eczema, but there are some treatments that can help keep aggressive symptoms under control. Above all, eczema patients should keep their skin clean and moisturized to prevent flare-ups. Doctors recommend taking regular showers with warm water (but not hot water, as that can dry skin even more), and applying moisturizer immediately after bathing. If regular moisturizer isn't enough to soothe skin, doctors may prescribe a topical ointment with steroids to reduce inflammation, and if that still isn't effective, systemic medications that fight inflammation throughout the whole body may help. Ultraviolet B therapy is another treatment option. A few times a week, patients stand in a UVB light box that mimics natural sunlight. This encourages vitamin D production and curbs skin's inflammatory response while calming itchiness at the same time.

Pet Obesity is Causing Big Health Problems, According to a New Report

iStock/dennisvdw
iStock/dennisvdw

If you’ve recently picked up your cat and felt your back give out, your furry friend may be among the 60 percent of the feline population that’s overweight. Dogs are also getting chubbier: about 56 percent of pet pooches are obese.

According to Banfield Pet Hospital, America's largest general veterinary practice with more than 1000 hospitals nationwide, those fat cats and chunky puppies are at risk for chronic health issues. In a new report, the hospital finds that osteoarthritis (OA) in pets is on the rise, with a 66 percent increase in dogs and a 150 percent increase in cats over the past 10 years.

Osteoarthritis is a kind of arthritis caused by inflammation or damage in joint tissue. Genetics, injury, or bone abnormalities can all be factors. The disease is chronic and degenerative and can make it difficult for pets to move around as they get older.

Excess weight can both precede OA and make it worse. When a pet is overweight, they can develop chronic pain that leads to stress on joints. If they already have OA, that joint discomfort can prevent them from being active, leading to weight gain. That worsens the condition, and the cycle continues.

A dog is 2.3 times more likely to be diagnosed with OA if it's obese, while cats are 1.2 times more likely. Dogs suffering from the condition tend to display symptoms like putting their weight off to one side when sitting, avoiding stairs, or appearing uninterested in playing. Cats might have loose or matted hair because they can't maneuver to groom certain parts of their body.

Although OA can be seen at any age, it’s often mistaken for old age and a pet slowing down naturally. If you notice your pet is either soft around the middle or moving more slowly, it’s best to see a veterinarian. Pets who are overweight or suffering from OA—or both—can benefit from treatments like special diets.

12 Facts About Diabetes Mellitus

iStock/mthipsorn
iStock/mthipsorn

Thirty million Americans—about 9 percent of the country's population—are living with diabetes mellitus, or simply diabetes. This chronic condition is characterized by sustained high blood sugar levels. In many patients, symptoms can be managed with insulin injections and lifestyle changes, but in others, the complications can be deadly. Here's what you need to know about diabetes mellitus.

1. There are three types of diabetes.

In healthy people, the pancreas produces enough of the hormone insulin to metabolize sugars into glucose and move the glucose into cells, where it's used for energy.

But people with type 2 diabetes—the most common form of the disease, accounting for about 95 percent of cases—either can't produce enough insulin to transport the sugars, or their cells have become insulin-resistant. The result is a buildup of glucose in the blood (a.k.a. high blood sugar or hyperglycemia). Type 2 diabetes typically develops in adults.

Type 1 diabetes, also known as juvenile diabetes, makes up the remaining 5 percent of chronic cases and most often develops in children and young adults. With this condition, the initial problem isn’t blood sugar levels, but insulin production: The pancreas can’t make enough insulin to process even normal amounts of glucose. The sugar builds up as a result, leading to dangerous concentrations in the bloodstream.

The third form, gestational diabetes, only afflicts pregnant people who weren’t diabetic before their pregnancy. The mother's blood glucose levels usually spike around the 24th week of pregnancy, but with a healthy diet, exercise, and insulin shots in some cases, diabetes symptoms usually can be managed. Blood sugar levels tend to return to normal in patients following their pregnancies.

2. The mellitus in diabetes mellitus means "honey sweet."

Around 3000 years ago, ancient Egyptians described a condition with diabetes-like symptoms, though it wasn't called diabetes yet. It took a few hundred years before the Greek physician Araetus of Cappodocia came up with the name diabetes based on the Greek word for "passing through" (as in passing a lot of urine, a common diabetes symptom). English doctor Thomas Willis tacked on the word mellitus, meaning "honey sweet," in 1675, building on previous physicians' observations that diabetic patients had sweet urine. Finally, in 1776, another English physician named Matthew Dobson confirmed that both the blood and urine of diabetes patients were made sweeter by high levels of glucose in their blood.

3. The cause of one type of diabetes is well understood; the other, not so much.

A person’s lifestyle is a key predictor of developing type 2 diabetes. Factors like being overweight or obese, consuming a high-calorie diet, smoking, and seldom exercising contribute to the risk. Foods and drinks that are high in sugar—soda, candy, ice cream, dessert— may contribute to hyperglycemia, but any food that’s high in calories, even if it's not sweet, can raise blood sugar levels.

In contrast to these well-established factors, medical experts aren’t entirely sure what causes type 1 diabetes. We do know that type 1 is an autoimmune disease that develops when the body attacks and damages insulin-producing cells in the pancreas. Some scientists think that environmental factors, like viruses, may trigger this immune response.

4. Family history also plays a role in diabetes risk.

If a parent or sibling has type 2 diabetes, you are predisposed to developing pre-diabetes and type 2 diabetes. Lifestyle habits explain some of these incidences, since family members may share similar diets and exercise habits. Genetics also play a role, but just because one close relative has diabetes does not mean you're destined to. Research conducted on identical twins, which share identical genes, showed that the pairs have discordant risk. Among twins in which one has type 1 diabetes, the other has only a 50 percent chance of developing it; for type 2, the risk for the second twin is 75 percent at most.

5. Racial minorities are at a higher risk for developing diabetes.

Many racial minority groups in the U.S. have a higher chance of developing type 2 diabetes. Black Americans, Latino Americans, Native Americans, Pacific Islanders, and some groups of Asian Americans are more likely to have pre-diabetes and type 2 diabetes than white Americans. This can be partly explained by the fact that some of these groups also have higher rates of obesity, which is one of the primary risk factors of type 2 diabetes. Socioeconomics may also play a role: One study shows that people with diabetes living in poverty are less likely to visit diabetes clinics and receive proper testing than their middle-income counterparts. According to another study, diabetic people without health insurance have higher blood sugar, blood pressure, and cholesterol rates than insured diabetics. Genetics, on the other hand, don’t appear to contribute to these trends.

6. Diabetes is one of the world's deadliest diseases.

With proper management, people with diabetes can live long, comfortable lives. But if the disease isn’t treated, it can have dire consequences. Diabetics make up the majority of people who develop chronic kidney disease, have adult-onset blindness, and need lower-limb amputations. In the most serious cases, diabetes leads to death. The condition is one of the deadliest diseases in the world, killing more people than breast cancer and AIDS combined.

7. Millions of Americans are pre-diabetic.

According to the CDC, 84 million adults living in the U.S. are pre-diabetic: Their blood sugar is higher than what’s considered safe, but hasn't yet reached diabetic level. In pre-diabetic patients, blood glucose levels after eight hours of fasting fall between 100 and 125 milligrams per deciliter, and diabetic levels are anything above that. People with pre-diabetes are not just at a greater risk for type 2 diabetes, but also for heart disease and stroke. Fortunately, people who are diagnosed with pre-diabetes can take steps to eat a healthier diet, increase physical activity, and test their blood glucose level several times a day to control the condition. In some cases, doctors will prescribe drugs like metformin that make the body more receptive to the insulin it produces.

8. After climbing for decades, rates of diabetes incidence are declining.

In the U.S., the rate of new diagnoses skyrocketed 382 percent between 1988 and 2014. Globally, 108 million people had diabetes in 1980, but by 2014 that number was 422 million.

But thanks to nationwide education and prevention efforts, the trend has reversed in the U.S., according to the CDC. Since peaking in 2009, the number of new diabetes cases in America has dropped by 35 percent. In that same timeframe, the number of people living with diagnosed diabetes in the U.S. has plateaued, suggesting people with the condition are living longer.

9. The first successful treatment for type 1 diabetes occurred in 1922.

Prior to the 20th century, type 1 diabetes was usually fatal. Diabetic ketoacidosis—a toxic buildup of chemicals called ketones, which arise when the body can no longer use glucose and instead breaks down other tissues for energy—killed most patients within a year or two of diagnosis. In searching for way to save children with juvenile (type 1) diabetes, Canadian physician Frederick Banting and medical student Charles Best built on the work of earlier researchers, who had demonstrated that removing the pancreas from a dog immediately caused diabetes symptoms in the animal. Banting and Best extracted insulin from dog pancreases in University of Toronto professor J.J.R. Macleod's lab. After injecting the insulin back into dogs whose pancreases had been removed, they realized the hormone regulated blood sugar levels. On January 11, 1922, they administered insulin to a human patient, and further refined the extract to reduce side effects. In 1923, Banting and Macleod received the Nobel Prize in Medicine for their work.

10. A pioneering physicist discovered the difference between type and and type 1 diabetes.

In the 1950s, physicist Rosalyn Yalow and her research partner Solomon Berson developed a method for measuring minute amounts of substances in blood. Inspired by Yalow's husband's struggle with diabetes, Yalow focused her research on insulin. Their "radioimmunoassay" technology revealed that some diabetes patients were still able to produce their own insulin, leading them to create two separate categories for the disease: “insulin-dependent” (type 1) and “non-insulin-dependent” (type 2). Prior to that discovery in 1959, there was no distinction between the two types. In 1977, Yalow won the 1977 Nobel Prize in Medicine for the radioimmunoassay, one of only 12 female Nobel laureates in medicine.

11. Making one insulin dose once required tons of pig parts.

Insulin is relatively easy to make today. Most of what's used in injections comes from a special non-disease-producing laboratory strain of E. coli bacteria that's been genetically modified to produce insulin, but that wasn't always the case. Until about 40 years ago, 2 tons of pig pancreases were required to produce just 8 ounces of pure insulin. The pig parts were typically recycled from pork farms.

12. A quarter of diabetes patients don’t know they have it.

The symptoms of type 2 diabetes can develop for years before patients think to ask their doctor about them. These include frequent urination, unexplained thirst, numbness in the extremities, dry skin, blurry vision, fatigue, and sores that are slow to heal—signs that may not be a cause for concern on their own, but together can indicate a more serious problem. Patients with type 1 diabetes may also experience nausea, vomiting, and stomach pain.

While serious, the symptoms of diabetes are sometimes easy to overlook. That’s why 25 percent of people with the illness, 7.2 million in the U.S., are undiagnosed. And that number doesn’t even cover the majority of people with pre-diabetes who aren’t aware they’re on their way to becoming diabetic.

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