The doctor will probably prescribe antibiotics to prevent Lyme disease. A secondary bacterial infection, such as cellulitis , lymphangitis, or impetigo , can result if a person scratches the bite area and breaks the skin.
Antibiotics can treat these infections. Borrelia burgdorferi , a bacterium that some ticks carry, causes Lyme disease.
The individual develops a red rash that spreads outwards. Antibiotics can also help treat Lyme disease. Without treatment, Lyme disease might lead to meningitis , facial palsy, radiculopathy, and, in rare cases, encephalitis.
Other risks include joint damage, leading to arthritis , and heart problems. Different types of mosquito transmit different diseases, such as West Nile virus and malaria. Using an insect repellent may be necessary. A person can spray repellent onto their clothes but should avoid the face. Insect repellent is not suitable for infants. If a child is under 10 years old, the repellent should contain no more than 10 percent DEET.
Oil of eucalyptus can be effective, but it is not suitable for children under 3 years of age. Insect repellents are available to purchase online. Check that it contains a maximum of 10 percent DEET if it is to be used for children. A person can buy clothes, shoes, and camping gear to which manufacturers have added permethrin.
Permethrin spray is available for purchase online. Pitch tents away from water or swamps. Travelers should check whether the area they are visiting has a risk of infection and take the necessary precautions. Local health departments and park authorities can provide information about tick-infested areas. If a person cannot avoid a tick-infested area, they should walk in the center of paths to avoid contact with vegetation. Read the article in Spanish. Cat bites can lead to infections. Learn more about how this happens, the diseases a person could contract, and how to treat a cat bite here.
Snakebites can be dangerous. Symptoms of a rattlesnake bite may include pain, bleeding, drooping eyelids, and low blood pressure. Learn more here. Bee stings are common. It is important to remain calm and remove a bee stinger from the skin as quickly as possible.
Learn more. Bee stings are an unpleasant, although common, occurrence. Swelling can last more than 24 hours, and it can persist up to 7 days. Spider bites are uncommon, but they can be painful and sometimes dangerous. Read on to learn which spiders bite, when to contact a doctor, and more. Which insects bite? Spider bites. Insect bites. Risk factors. Bites and Stings Dermatology Tropical Diseases. Exposure to air pollutants may amplify risk for depression in healthy individuals.
Costs associated with obesity may account for 3. Related Coverage. How can cat bites be dangerous? Medically reviewed by Debra Sullivan, Ph. Rattlesnake bite: What you should know. Medically reviewed by Deborah Weatherspoon, Ph. How to safely remove a bee stinger.
Medically reviewed by Debra Rose Wilson, Ph. Often, it looks like localized hives one large one or several small ones. Sometimes, a small water blister occurs in the center of the bump.
This is common in younger children. Itchy Insect Bites. Bites of mosquitoes, chiggers harvest mites , fleas, and bedbugs usually cause itchy, red bumps. Painful Insect Bites. Bites of horseflies, deer flies, and gnats usually cause a painful, red bump.
Fire ants, harvester ants, blister beetles, and centipedes also cause a painful, red bump. Within a few hours, fire ant bites can change to blisters or pimples. Cause of Insect Bite Reaction The skin bumps are the body's reaction to the insect's saliva. While the bug is sucking blood, some of its secretions get mixed in. The main symptoms are difficulty breathing and swallowing starting within 2 hours of the sting.
Onset usually is within 20 minutes. Anaphylaxis can occur with bee, yellow jacket, wasp, or fire ant stings. Anaphylactic reactions are very rare after other insect bites. Symptoms of a brown recluse spider bite occur within a few hours and include fever, chills, itching, nausea, and sweating. Because some people will have a serious reaction that can lead to kidney failure, seizure, and coma, it's important to get medical care at once, according to the National Institutes of Health NIH National Library of Medicine.
Be sure to seek medical attention immediately if you could have been bitten by a poisonous spider; call or the American Association of Poison Control Centers at Some tick bites can be dangerous because the insects may carry disease.
Black-legged ticks, formerly known as deer ticks , may carry Lyme disease, and dog ticks can spread Rocky Mountain spotted fever. Up to 30, cases of Lyme disease are reported each year in the United States.
You may also have fever, fatigue, headaches, muscle and joint aches, as well as irregular heart rhythms. But 20 to 30 percent of people who get infected never develop a rash. Symptoms such as swollen or painful joints, memory loss , or other autoimmune responses that mimic those of other diseases may present themselves when Lyme disease is in its advanced stages.
A diagnosis may remain elusive because many doctors will not initially equate these nonspecific symptoms with Lyme disease. Rocky Mountain spotted fever from a tick bite is rare, with about 2, cases per year in the United States. It causes a fever, a headache, muscle aches, and a skin rash.
The rash of pinpoint red spots begins on the ankles and wrists after a few days of fever, but later the rash spreads to the rest of the body; in some people, a rash never develops. Although this infection can be severe — and even fatal — it is preventable and can be successfully treated with prompt medical care, according to the CDC. Another type of tick to avoid is the lone star tick. It can transmit several viruses, the CDC notes. Symptoms of flea bites may begin within hours after you're bitten, and the bites tend to appear in groups of three or four.
You may notice itching, hives, and swelling around an injury or sore, or a rash of small, red bumps that may or may not bleed. Flea bites are most common on your ankles and legs, but may also appear in your armpits, around your waist, and in the bends of your knees and elbows. A flea-bite rash turns white when you press on it and tends to get larger or spread over time. Scratching the rash can lead to a skin infection, according to the NIH National Library of Medicine , and may need medical attention.
In extremely rare cases, fleas are infected with the bacteria that causes plague. The disease can spread from wild rodents to pets and people. Over the past 10 years, as few as 1 and as many as 17 cases of plague were reported in the United States, according to the CDC , most in the rural West. Symptoms of plague include swollen lymph nodes, headache, fever, and chills that appear from one to six days after the bite.
Beestings cause a sharp pain that may continue for a few minutes, then fade to a dull, aching feeling. The area may still feel sore to the touch a few days later. A red skin bump with white around it may appear around the site of the sting, and the area may itch and feel hot to the touch.
If you've been stung by a bee before, your body may also have an immune response to the venom in the sting, resulting in swelling where the sting occurred or in an entire area of your body, including your throat and lungs. If you have this type of allergic response, called anaphylaxis , it is a medical emergency that needs treatment immediately. Symptoms of a severe allergy to a beesting include hives, swelling, trouble breathing, dizziness, cramps, nausea, diarrhea, and even cardiac arrest.
Lice bites are tiny red spots on the shoulders, neck, and scalp from small parasitic insects that can live on your clothes or in your bedding. Some people may develop a larger, uncomfortable skin rash from lice bites.
Continual scratching of the itchy spots could lead to an infection, marked by symptoms including swollen lymph nodes and tender, red skin. An infected lice bite may also ooze and crust over; it will need to be treated by a doctor, but lice are not known to carry other diseases. Ant bites and stings are typically painful and cause red skin bumps. Some types of ants, like fire ants, are venomous, and their bites can cause a severe allergic reaction. Fire ants bite first to hold on and then sting, giving a sharp pain and a burning sensation.
If you're bitten by fire ants , you may see white, fluid-filled pustules or blisters pictured a day or two after the sting. These last three to eight days and may cause scars. The bumps may also be itchy and red, and you may have swelling around the site.
It's important not to scratch or break open the blisters because they can become infected, notes the American College of Allergy, Asthma, and Immunology. Carpenter ant bites are also painful because they spray formic acid into the bite, which causes a burning feeling. Mites do not usually spread disease, but their bites can irritate the skin and cause intense itching. Itch mites usually feed on insects but will bite other animals, including people.
The bites usually go unnoticed until itchy, red marks develop that may look like a skin rash. Chiggers are a form of mite that inject their saliva so that they can liquefy and eat skin. In response to a chigger bite , the skin around the bite hardens.
0コメント