16 Agustus, 2011

Fungus


Fungal infections can be itchy and annoying, but they're rarely serious. Common infections such as athlete's foot, jock itch, and ringworm are caused by fungus and are easy to get and to pass around. In healthy people, they usually don't spread beyond the skin's surface, so they're easy to treat. If you spend a lot of time at the gym, take steps to protect yourself against fungal infections.

Athlete's Foot

Itchy, burning, cracked, and peeling feet? Athlete's foot (tinea pedis) usually develops between the toes and can spread via wet locker room floors, sweaty socks, and damp shoes. Prevent it by wearing shower shoes at the gym, washing your feet daily, drying them well, and wearing clean socks.

Jock Itch

A raised, itchy, red rash around your groin means you probably have jock itch (tinea cruris), which can affect men and women. It can be caused by sweating and the humid environment often created by athletic gear. You can prevent it by keeping your groin clean and dry, and wearing dry, clean underwear and loose pants after a workout.

Ringworm

Ringworm (tinea corporis) isn't caused by worms. This raised, red, circular, itchy fungal infection -- usually with clearer skin in the center -- can occur on the body or scalp (tinea capitis). You're at greater risk if your skin is often exposed to a warm, moist environment and you come in contact with ringworm from a person or pet. Prevent it by showering after sweating, then drying well. It's easily spread, so don't share towels, combs, or other personal items.

Nail Fungus

Brittle, discolored, thick nails may mean you have nail fungus (onychomycosis). Though more common in toenails, fungus can affect fingernails too, and is encouraged by warm, damp conditions. Prevent nail fungus by keeping nails short and wearing clean, dry socks, and changing them often. Wear wide-toed shoes (so toes aren't crammed together), and don't share nail clippers.

Caring for Gym Clothes

Change out of your gym clothes right after a workout. Sweaty gear provides a perfect home for fungi and other germs to thrive and grow. Wash exercise clothes after each use. Wear clean clothes before each workout.

Fungal Infections: Hygiene at Home

To prevent fungal infections from taking a foothold at home, your best defense is to keep skin clean and dry. Change underwear and socks daily. Let your sneakers air out and wash them regularly. Take your shoes off at home to expose your feet to the air.

Gym and Locker Room Hygiene

To fight fungal infections at the gym, wear shower shoes in the locker room and avoid sitting on wet benches. Don't share workout mats or towels. Wash your hands before and after a workout, and don't forget to wipe down gym equipment before and after using it.

Treating Fungal Infections

Despite your best efforts at prevention, you think you have a fungal infection. Now what? First, talk to your doctor. Other skin problems can look a lot like fungal infections, but require different treatment. For mild infections, topical medication may be all you need. More serious problems could require oral prescription drugs.

Can Fungal Infections Make You Sick?

Fungal infections may look bad, but they rarely lead to more than itch and irritation. Unless you have a weakened immune system, your body is usually good at tackling infection before it causes serious illness. Still, if you're worried about your jock itch, athlete's foot, or any rash, talk to your doctor.


Birthmarks


Birthmark Basics

Birthmarks gain attention when there's a media blitz about someone with a visible mark, such as New Orleans Saints quarterback Drew Brees. News reports suggest that he was born with this birthmark on his right cheek, which doctors checked early on and found to be harmless. Folk wisdom calls such babies "touched by an angel," but a doctor's advice is best.

What Is a Birthmark?

A birthmark is a colored mark on or under the skin that's present at birth or develops shortly after birth.Some birthmarks fade with time; others become more pronounced. Birthmarks may be caused by extra pigment-producing cells in the skin or by blood vessels that do not grow normally. Most birthmarks are painless and harmless. In rare cases, they can cause complications or are associated with other conditions. All birthmarks should be checked by a doctor.

Seen here is former Soviet President Mikhail Gorbachev, who has a port wine stain on his forehead.

Salmon Patches

Salmon patches are nests of blood vessels that appear as small, pink, flat marks on the skin. They occur in one-third of newborn babies. Salmon patches can appear on the back of the neck ("stork bite"), between the eyes ("angel's kiss"), or on the forehead, nose, upper lip, or eyelids. Some fade as baby grows, but patches on the back of the neck usually don't go away. Salmon patches require no treatment.

Port Wine Stains

A port wine stain begins as a flat, pinkish-red mark at birth and gradually becomes darker and reddish-purple with age. Most will get bigger and thicker, too. Port wine stains are caused by dilated blood capillaries and occur in about three out of every 1,000 babies. Those on the eyelid may increase the risk of glaucoma. Port wine stains may be a sign of other disorders, but usually not. Treatment includes laser therapy, skin grafts, and masking makeup.

Mongolian Spots

Mongolian spots are flat, smooth marks that are present from birth. Frequently found on the buttocks or lower back, they're typically blue, but can also be bluish gray, bluish black, or brown. They may resemble a bruise. Mongolian spots are most common on darker-skinned babies. They usually fade by school age, but may never disappear entirely. No treatment is required.

Cafe-Au-Lait Spots

Cafe-au-lait spots are smooth and oval and range in color from light to medium brown, which is how they got their name, "coffee with milk" in French. They're typically found on the torso, buttocks, and legs. Cafe-au-lait spots may get bigger and darker with age, but are generally not considered a problem. However, having several spots larger than a quarter is linked with neurofibromatosis and the rare McCune-Albright syndrome. Consult a doctor if your child has several spots.

Strawberry Hemangiomas

Hemangiomas are a collection of small, closely packed blood vessels. Strawberry hemangiomas occur on the surface of the skin, usually on the face, scalp, back, or chest. They may be red or purple and are often raised, with sharp borders. These occur in 2 of every 100 babies born.

Strawberry hemangiomas usually develop a few weeks after birth. They grow rapidly through the first year before disappearing around age 9. Some slight discoloration or puckering of the skin may remain at the site. No treatment is required, but when they develop near the eye or mouth, or in a location that can bleed or become infected, they may need to be treated or removed.

Cavernous Hemangiomas

Present at birth, deeper cavernous hemangiomas are just under the skin and appear as a bluish spongy mass of tissue filled with blood. If they're deep enough, the overlying skin may look normal. Cavernous hemangiomas typically appear on the head or neck. Most disappear by puberty. A combination of cavernous and strawberry hemangioma can occur.

Venous Malformation

Venous malformations are caused by abnormally formed, dilated veins. Although present at birth, they may not become apparent until later in childhood or adulthood. Venous malformations appear in 1% to 4% of babies. They are often found on the jaw, cheek, tongue, and lips. They may also appear on other areas of the body. They will continue to grow slowly, and they don't shrink with time. Treatment -- often sclerotherapy or surgery -- may be necessary for pain or impaired function.

Congenital Nevi

Congenital nevi are moles that appear at birth. The surface may be flat, raised, or bumpy. These moles can grow anywhere on the body and vary in size from less than an inch to over 8 inches. Congenital nevi occur in 1% of newborns. Most moles are not dangerous. But congenital nevi, especially large ones, have an increased risk of developing into melanoma, the deadliest type of skin cancer. All moles should be monitored for changes.


15 Agustus, 2011

Identifying Bugs and Their Bites

Ticks

Many bugs give us reason for pause, including poisonous spiders, chiggers, bees and lice. But few get under our skin – quite literally – like the tick. If you enjoy the outdoors, be careful of ticks — they can attach as you brush past grass and plants. Ticks don't always carry diseases, and most bites are not serious. But they can carry diseases including Lyme disease and Rocky Mountain spotted fever.

Black-legged, or deer ticks, can transmit Lyme disease to humans



Tick Bites

Once a tick latches onto skin, it often moves to the warm, moist armpits and groin — feeding on blood and passing on any disease it carries. A tick bite can also trigger an allergic reaction. If you have a tick, it is important to remove it properly. To prevent tick bites, keep your arms, legs, and head covered when outdoors. Use tick repellant with DEET. Check for ticks after spending time in grassy or wooded areas.

Ticks latch onto skin where they feed on blood



Lyme Disease

In the U.S., the Western black–legged tick and the deer tick can carry Lyme disease bacteria. Infected ticks usually don't spread the disease until they've been attached for at least 36 hours. The first sign of infection is usually a circular skin rash. Early symptoms may also include fever, headache, and fatigue. Untreated Lyme disease may spread to other parts of the body, including the muscles, joints, heart, and nervous system. Most cases of Lyme disease can be treated successfully with antibiotics.

Ticks can cause Lyme disease which may cause a "bull's-eye" rash



Black Widow Spiders: Poisonous!

Wood piles and tree stumps — that's where poisonous female black widows hide. She is long–legged and glossy black, with a distinctive orange, red, or yellow "hourglass" shape on her underside. Most spiders are 2 inches wide, but some are smaller.

Female black widows have a bright-colored "hourglass" on their underside



Black Widow Spider Bites

Black widow spider bites may cause sharp, shooting pain up the limb, but they can also be painless. Look for one or two red fang marks, redness, tenderness, and a nodule at the bite site. Severe muscle cramps, nausea, vomiting, seizure, and a rise in blood pressure may follow soon after. Get medical care immediately. Anti–venom medicine is available. If possible, bring the spider with you for positive identification.

Tiny red fang marks – classic sign of widow spider bites



Brown Recluse Spiders Can Be Deadly

Hiding in attics and closets — in Midwestern and South central states — that's where you'll find brown recluse spiders. The spiders range in color from yellowish–tan to dark brown, with darker legs. Their venom is extremely poisonous, and their bite can cause serious wounds and infection. Yet you may not feel their bite.

Brown recluses have a "violin" pattern in the upper body, where legs attach



Brown Recluse Spider Bites

When the brown recluse bites, it is often painless — then skin reddens, turns white, develops a red "bull's–eye," blisters, and becomes painful. These bites can be deadly in rare cases. Get medical care immediately. If you can, bring the spider with you for positive identification.

A brown recluse spider's bite can cause tissue death — as shown here



Head Lice: Itchy!

In hair — that's where you'll find lice. They like to hide in the neck area of the scalp and behind the ears. If you have lice, you likely got it from sharing a hat, brush, or other item with a person who has lice. Lice are itchy, but scratching can lead to infection. In severe cases, hair may fall out.

Head lice are grayish-white, and no bigger than sesame seeds



Head Lice Remedies

To kill lice and their eggs (called nits), use lotions, creams, or shampoos from the drug store or prescribed by your doctor. Wash clothing, bedding, and brushes to prevent the spread of lice. Check all household members, and treat everyone who has nits or lice.

Scalp with skin infection from scratching; lice eggs are "glued" to the hair



Fleas: Not for Pets Only

Fleas are small, wingless, agile insects that live off the blood of their host – and they don't just bite pets. They dine on people, too.

A close look at a flea



Flea Bites

Some people are very sensitive to flea bites — but scratching can cause a wound or infection. The best solution is to get rid of fleas on pets and in your home. Keep pets out of your bed and be sure to vacuum rugs daily. Spray insecticides on infested areas. Consider using a once–a–month insecticide on your pet.

Flea bites result in raised itching spots with a puncture in the center



Bee, Wasp, Hornet, Yellow Jacket

When a bee stings, it loses the stinger and dies. But a wasp, hornet, or yellow jacket can inflict multiple stings because it does not lose the stinger. These stings can cause serious reactions in people who are allergic to them.

Wasps and yellow jackets can inflict multiple stings



Bee, Wasp, Hornet, Yellow Jacket Stings

If you don't have an allergic reaction, simply remove the stinger, clean the sting site, apply ice, take oral antihistamine for itching, and take ibuprofen or acetaminophen for pain relief. If you have a severe anaphylactic reaction, lie down and carefully remove the stinger. Use an EpiPen (epinephrine) if you have one. Get immediate medical care.

A wasp sting (left) and a severe allergic reaction to a wasp sting (right)



Fire Ants

Fire ants look much like ordinary ants — and are found in most of the Southeastern states. They produce large mounds in open areas and are aggressive when disturbed. During an attack, the fire ant latches onto the skin with its jaw, then stings from its abdomen. It may inject venom many times.

A close look at a red fire ant



Fire Ant Stings

The fire ant sting typically causes red hive–like lesions that burn and itch. Painful pus–filled lesions can also occur. Cold packs, pain relievers, and antihistamines can help relieve the discomfort. A large number of stings may trigger a toxic or severe life–threatening allergic reaction. Get emergency care.

Painful stings from the fire ant quickly fill with pus



Chiggers: Itchy!

Contrary to popular belief, chiggers are not insects; they are arachnids. Specifically, chiggers are the juvenile (or larval) form of a family of mites called Trombiculidae. They only dine on humans in their juvenile form, they later becoming vegetarians as adults. Their bites are painless, but lesions are very itchy. Itching usually peaks a day or two after the bite occurs.

Chiggers are less than 1/150th of an inch in diameter



Chigger Bites

After a few days of being attached to the skin, chiggers fall off — leaving itchy red welts. Over–the–counter products can help relieve itching. See your doctor if the skin appears infected or the welts appear to be spreading.

Itchy red welts can result from chigger bites



Stealthy Pests

When scabies mites get into the skin, they can cause a big skin problem. The mites spread through skin–to–skin contact with an infected person — or by sharing towels, bed linens, and other objects.

Scabies are tiny mites that burrow into your skin



Treating Scabies

Intense itching and skin sores don't appear until several weeks after mites get into skin. The itching is very severe and usually worse at night. The rash typically is seen on the sides and webs of the fingers, the wrist, elbows, genitals, and buttock. You'll need prescription lotion or pills to get rid of scabies. Wash all clothes, towels, and bedding in hot water.

Weeks may pass before itching and skin sores develop



Bedbugs: Hitching a Ride

Their name tells the tale, as these tiny insects tend to hide in bedding. They are often found in hotels, shelters, and apartment complexes — and can hitch a ride into your home aboard luggage, pets, and boxes.

Bedbugs are very tiny and can be seen by the astute observer



Bedbug Bites

Bedbugs leave itchy, red bites on the skin, usually on the arms or shoulders. More of a nuisance than a health hazard, it is possible to develop an infection from scratching. If you have an allergic skin reaction, use creams with corticosteroids and take oral antihistamines — and see your doctor.

Bedbug bites do not usually require treatment



Puss Caterpillar: Southern Stinger!

The most poisonous caterpillar in the U.S., puss caterpillars can be found in Southern states where they feed on shade trees like elm, oak, and sycamore. The poison is hidden in hollow spines among the hairs.

The puss caterpillar is close to 1 inch long



Puss Caterpillar Stings

When a puss caterpillar stings, you may get waves of intense pain, rash, fever, vomiting, and muscle cramps. Remove the broken–off spines by using cellophane tape or a commercial facial peel — and call your doctor.

Evidence of contact with a puss caterpillar



Scorpions: Deadly!

Not all scorpions are poisonous, but those that are can be deadly. Scorpions are found mostly in the Southwest and Western states. Symptoms of a sting include pain, swelling, itching, vomiting, increased sweating, and vision problems. Get medical care immediately.

The Arizona bark scorpion's venom is very dangerous



Deerflies : Painful !

These biting flies live in wetlands, forests, and other damp environs. Treat the painful bites with alcohol to prevent infection. Deerflies spread Tularemia, an infectious bacterial disease that requires medical attention. Insect repellant and protective clothing help prevent deerfly bites.

Deerflies are larger than a housefly and have a pattern on the wing



Mosquitoes: More Than Irritating!

Mosquitoes aren't just annoying. Scratching a bite can cause a skin infection. Also, mosquitoes can carry West Nile virus, dengue fever, and other diseases. To protect yourself from mosquitoes, apply insect repellent and cover up when you go outdoors. Use window screens, and get rid of standing water in your yard.

Mosquitoes can carry diseases such as West Nile virus and dengue fever



Houseflies: Dirty, Hairy!

A housefly is a dirty insect — carrying more than 1 million bacteria on its body. It can spread intestinal infections by contaminating food. To control flies, keep food and garbage in closed containers and use window screens on your home.

Houseflies don't bite, but they can carry harmful bacteria



Cockroaches: Ugly Trouble

They're not just ugly. Cockroaches carry diseases like salmonella. When they die, the carcasses trigger allergic reactions and asthma. If you live in a warm climate, getting rid of cockroaches can be difficult. It helps to use pesticides, keep a clean kitchen, and repair cracks and holes in floors and walls.

Dead roaches can trigger asthma and allergic reactions


14 Agustus, 2011

Bedbugs


As if you needed something else to worry about, bedbugs, those pests from the old bedtime rhyme are making a comeback. More of a nuisance than a health hazard, they’re showing up to suck blood from people in hotels, college dorms, and hospitals. Take an informative look at bedbugs: what they are, where they lurk, and how to spot them before they get you.

Bedbugs are small, flat, wingless insects with six legs that, like mosquitoes, feed on blood from animals or people. They range in color from almost white to brown, but they turn rusty red after feeding. The common bedbug doesn't grow much longer than 0.2 inches (0.5 centimeters) and can be seen by the naked eye to the astute observer. Bedbugs get their name because they like to hide in bedding and mattresses.

A bedbug at actual size, and magnified for a closer look


Am I at Risk for Infestation?

Bedbugs are most often found in hotels, hostels, shelters, and apartment complexes where lots of people come and go. Because bedbugs hide in small crevices, they can hitch a ride into your home on luggage, pets, furniture, clothing, boxes, and other objects. Bedbugs are found worldwide, but are most common in developing countries. Once rare in North America, they may be on the rise due, in part, to increases in international travel.

During hotel stays, keep luggage off the floor and zipped



Feeding Habits

These nocturnal creatures can hide in beds, floors, furniture, wood, and paper trash during the day. We humans usually become their dinner during the night, with peak biting activity just before dawn.They can obtain their meal in as little as three minutes, after which they are engorged and drop off the host, then crawl into a hiding place to digest their meal. Bedbugs can live for 10 months, and can go weeks without feeding.

Bedbugs feed while you sleep, with peak biting activity just before dawn




Signs and Symptoms

Amazingly, these sneaky little bloodsuckers dine on you without waking you. You don't feel their stealthy bite because they inject a numbing agent into your body, along with an anticoagulant to keep your blood flowing as they suck. The first sign of bedbugs may be itchy, red bites on the skin, usually on the arms or shoulders. Bedbugs tend to leave straight rows of bites.

sBedbugs leave red, itchy bites on the skin, usually in rows


Treating Bites

Bedbug bites do not usually require treatment. If a secondary infection occurs (usually from scratching), apply a local antiseptic lotion or antibiotic cream or ointment. Creams with corticosteroids and oral antihistamines may be advised in the presence of allergic reaction or larger skin reactions. In these more severe cases, you may need to see your doctor.

Scratching bites can lead to infection



Do Bedbugs Transmit Diseases?

Bedbugs are more of a nuisance than a health hazard. In a recent study, researchers reviewed 53 recent studies on bedbugs and their health and medical effects. The results showed that although bedbugs have been blamed for the spread of up to 40 different human diseases, there is little evidence to suggest they are carriers of human disease.

An adult bedbug ingesting a meal from a human



Bedbug or Imposter?

Don't assume your bites are bedbugs. Bites can be hard to identify, even for doctors. Rule out mosquitoes, fleas, mites, and biting gnats by conducting a visual inspection. It's best to collect and identify bedbugs to confirm bites. Look for the bugs themselves or their bloodstains, especially along the seams of mattresses. Further, look for dark spots of insect waste where bedbugs might crawl into hiding places on furniture, walls, and floors.

Check for bedbugs along the seams of mattresses



Bite Back Against Bedbugs

Get rid of infested mattresses and box springs or cover them with a plastic mattress bag to trap the bugs. Wash clothes and bedding in hot water, and dry on high heat. Clean furniture and vacuum cracks in wood floors and doors where bugs may hide. Shake out suitcases. Use an insecticide in the cracks of floors or bed frames, but read the label; do not apply to areas that come in direct contact with skin. If you still can't get rid of them, call an exterminator.

Wash clothes and bedding in hot, soapy water to kill bedbugs and their larvae