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Brown recluse spiders. Also known as the violin spider. Brown with a dark violin-shaped marking on its head. Has six equal-sized eyes (most spiders have eight eyes). Cannot bite humans without counterpressure, like if it is accidentally trapped against the skin. Bites may cause a stinging sensation with localized pain.
The best known exceptions are widow spiders (Latrodectus spp., including the black widow L. mactans) and brown spiders (Loxesceles spp., particularly the brown recluse, Lox. reclusa). However, cases of arachnid envenomation from the hobo spider (Tegenaria agrestis) are being reported increasingly in the Pacific Northwest.
Erythema migrans rash is a common symptom that occurs in over 70 percent of people with Lyme disease. Erythema migrans rashes have certain characteristics that help differentiate them from other types of skin lesions. Review the images below to learn what erythema migrans rashes look like versus other skin conditions.
Patients with orophyangeal tularemia may have sore throat, mouth ulcers, tonsillitis, and swelling of lymph glands in the neck. Pneumonic This is the most serious form of tularemia. Symptoms include cough, chest pain, and difficulty breathing. This form results from breathing dusts or aerosols containing the organism.
Signs and Symptoms. Signs and symptoms of RMSF begin 3 to 12 days after the bite of an infected tick. However, because tick bites are usually not painful, many people do not remember being bitten. Illness generally begins with sudden onset of fever and headache. Most people visit a healthcare provider during the first few days of symptoms.
Plague is a disease that affects humans and other mammals. It is caused by the bacterium, Yersinia pestis. Humans usually become infected through the bite of an infected rodent flea or by handling an infected animal. Plague can be cured with antibiotics, but these must be given promptly to prevent serious illness or death. Plague is infamous ...
When a mosquito bites you, it pierces the skin using a special mouthpart (proboscis) to suck up blood. As the mosquito is feeding, it injects saliva into your skin. Your body reacts to the saliva resulting in a bump and itching. Some people have only a mild reaction to a bite or bites. Other people react more strongly, and a large area of ...
Rocky Mountain spotted fever is a serious tickborne illness which can be deadly if not treated early. It is spread by several species of ticks in the United States, including: RMSF cases occur throughout the United States. Estimated geographic distribution of American dog ticks. Estimated geographic distribution of Rocky Mountain wood ticks.
Lyme disease is a bacterial infection spread to people through the bite of blacklegged ticks. Typical symptoms include fever, headache, fatigue, and a characteristic skin rash called erythema migrans. If left untreated, infection can spread to joints, the heart, and the nervous system. Lyme disease is most common in the Northeast, mid-Atlantic ...
Staphylococcus aureus (staph) is a very common germ. About one out of every three people have the germ on their skin or in their nose. This germ does not cause problems for most people. MRSA is a type of staph that can be resistant to several antibiotics. Anyone can get a MRSA infection or carry MRSA.