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3 days ago · Rocky Mountain spotted fever is a big part of the 1947 Republic Pictures movie Driftwood, starring Walter Brennan, James Bell, Dean Jagger, Natalie Wood, and Hobart Cavanaugh. In December 2013, hockey player Shane Doan was diagnosed with Rocky Mountain spotted fever, and returned to play in January 2014.
4 days ago · Rocky Mountain spotted fever (RMSF) is a disease caused by a type of bacteria carried by ticks. Alternative Names. Spotted fever. Causes. RMSF is caused by the bacterium Rickettsia rickettsii (R Rickettsii), which is carried by ticks. The bacteria spread to humans through a tick bite. In the western United States, the bacteria are carried by ...
- What Is Rocky Mountain Spotted Fever?
- Where Is Rocky Mountain Spotted Fever Prevalent?
Rocky Mountain spotted fever (RMSF) is the most serious tick-borne disease in the United States and is caused by Rickettsia rickettsii, a type of bacteria known as rickettsia. These bacteria are transmitted to humans by the bite of certain hard ticks. The two most important species of ticks that can transmit R. rickettsii in the United States are Dermacentor variabilis (the American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick). A third species, Rhipicephalus sanguineus (brow...
Although first recognized in the late 19th century in the Rocky Mountain region, by 1930s this disease was found to be present in the eastern portion of the country as well. The wood tick (Dermacentor andersoni), one of the main tick vectors is found in the Rocky Mountain states and southwestern Canada. The second major vector is the American dog tick (Dermacentor variabilis). This tick is distributed east of the Rocky Mountains and in some regions along the Pacific Coast. The cayenne tick (A...
Symptoms of Rocky Mountain spotted fever usually appear 2 to 14 days (average of 7 days) after being bitten by the infected tick. Fever is often the first symptom experienced by patients. The classic triad of fever, rash and tick bite is present among many but not all cases at the initial visit to the physician. Nausea, vomiting, severe headache, muscle pain and lack of appetite are also sometimes reported by patients in the early stage of disease. Other clinical symptoms include abnormal pla...
Clinical diagnosis of RMSF is based on serological tests including detection of antibody titers via IFA, detection of the bacterial agent via culture or immunohistochemical staining of biopsies, and by detection of bacterial DNA in a clinical specimen via PCR. However, treatment decisions should not be delayed while waiting for confirmation with laboratory results. Patients with a relevant history and symptomology should be treated with the appropriate antibiotic regimen immediately. Since th...
Upon suspicion of Rocky Mountain spotted fever, treatment should begin immediately. Delay of treatment has been associated with fatal outcomes. Treatment with tetracycline or chloramphenicol antibiotics can be used to treat RMSF. Doxycycline (a tetrycycline) antibiotic is the treatment of choice for both adults and children. However doxycycline is not recommended for use by pregnant women. Current recommendations from the Centers for Disease Control and Prevention (CDC) include doxycycline th...
Nov 29, 2020 · Colorado tick fever (CTF) is a viral infection transmitted from the bite of an infected Rocky Mountain wood tick (Dermacentor andersoni). It should not be confused with the bacterial tick-borne infection, Rocky Mountain spotted fever. Colorado tick fever is probably the same disease that American pioneers referred to as "mountain fever".
- Mountain tick fever, American tick fever, American mountain tick fever
- Lichen Planus. Lichen planus is a condition of the skin that is characterized by presence of small, reddish, shiny bumps. Sometimes, white streaks are present in between them.
- Eczema. Eczema, also referred to as contact dermatitis is a commonly occurring skin condition and another cause of wrist rash. Eczema is initially seen as flaky, dry, elevated patches of skin.
- Scabies. Scabies is a common condition of the skin that is caused by itch mites, which affect humans. The itch mite burrows into the skin and lives there and lay eggs.
- Rocky Mountain Spotted Fever. RMSF or Rocky Mountain spotted fever is a contagious illness caused by bacteria Rickettsia rickettsii. A tick bite transmits the bacteria.
2 days ago · Also known as tick typhus, Rocky Mountain spotted fever is caused by a bacteria-like microorganism, Rickettsia rickettsii. Rocky Mountain spotted fever rickettsiae are acquired by an American dog tick when it takes a blood meal from an infected animal.
- What Is Ehrlichiosis?
- Where Is Ehrlichiosis Prevalent?
Human Monocytic Ehrlichiosis (HME) , is caused by Ehrlichia chaffeensis, a type of bacteria known as rickettsia, and is transmitted to humans by the bite of the lone star tick Amblyomma americanum.Unlike Lyme disease, ehrlichiosis is considered an acute infection without chronic long-term consequences. Its severity varies from person to person. Many people exposed to the disease agent exhibit no symptoms, while others suffer mild symptoms that resolve without treatment. In a minority of cases...
First identified in 1987, the HME bacterium E. chaffeensis is transmitted by the lone star tick. Ticks infected with E. chaffeensis occur mostly south of the line connecting southern New Jersey and western Texas, and throughout the high plains states north of Texas to the Canadian border. Recent expansion of the lone star tick into New York state (particularly Long Island) and coastal New England has resulted in cases of HME being reported from these areas with increased frequency.Adult femal...
Clinical manifestations of HME can range from mild to life-threatening depending on the patient’s age and general health.Onset of ehrlichiosis generally begins within a week of a tick bite, and often includes fever, severe headaches, malaise, muscle pains, and chills. Other symptoms may include nausea, vomiting, confusion and joint pain. A rash may appear in some HME cases but unlike Lyme disease, this rash is general in nature and is not associated with the site of the tick bite.
An initial diagnosis is based on the patient’s symptoms and laboratory tests. Routine laboratory results include a low white blood cell count, low platelet count and elevated liver enzymes (ALT, AST, LDH). A confirmed diagnosis can be made using an antibody IFA (Immuno-Fluorescent Assay) after 21 days of suspected infection. In severe cases, blood smears can be examined for ehrlichiosis.
According to the Centers for Disease Control and Prevention (CDC), patients suspected of having ehrlichiosis should be treated immediately. Treatment should not be delayed until laboratory test results come back. Doxycycline is the drug of choice for ehrlichiosis patients. The CDC recommends 100 mg twice daily for adults or 4.4 mg/kg body weight per day in two divided doses for children under 100 lbs. Tetracycline can be used as an alternative if the patient is not pregnant (it is contraindia...
4 days ago · Bubonic plague A bubo on the upper thigh of a person infected with bubonic plague. Specialty Infectious disease Symptoms Fever, headaches, vomiting, swollen lymph nodes Usual onset 1–7 days after exposure Causes Yersinia pestis spread by fleas Diagnostic method Finding the bacterium in the blood, sputum, or lymph nodes Treatment Antibiotics such as streptomycin, gentamicin, or doxycycline ...