Visit our foundation to give a gift.
View Locations Near Me
Main Campus – Hartford
Connecticut Children’s – Waterbury
Urgent Care – Farmington
Specialty Care Center – Danbury
Connecticut Children’s Surgery Center at Farmington
Specialty Care Center – Fairfield
Search All Locations
Find a doctor
Find A Doctor
Request an Appointment
Amenities and Services
Who’s Who on Care Team
Getting Ready for Surgery
What to Expect—Picture Stories
Pay a Bill
Understanding the Different Fees
Pricing Transparency and Estimates
United Technologies Family Resource Center
Family Advisory Council
Legal Advocacy: Benefits, Education, Housing
Electronic Health Records
Share Your Story
Pay a Bill
Login to MyChart
Clinical Support Services Referrals
About the Network
Join the Network
Graduate Medical Education
Continuing Medical Education
MOC/Practice Quality Improvement
Educating Practices in the Community (EPIC)
Learning & Performance
Meet our Physician Relations Team
Request Medical Records
Join our Referring Provider Advisory Board
View our Physician Callback Standards
Read & Subscribe to Medical News
Register for Email Updates
Update Your Practice Information
Refer a Patient
Find and Print Health Info
Health Information For Teens
Rocky Mountain spotted fever (RMSF) is a bacterial infection. People get it from the bite of an infected tick. Most infections happen in the spring and summer, when ticks are active.
Doctors treat RMSF with
. With prompt treatment, most people recover in a few days.
RMSF gets its name from the trademark rash it causes. Small red spots and blotches begin on the wrists and ankles, then spread to the palms and soles, and up the arms and legs toward the trunk. Over time, the red spots might start to look more like bruises or bloody dots or patches under the skin.
Other signs of RMSF include:
Symptoms often begin suddenly, usually within 1 week of a tick bite, though sometimes a bit later. Often, the person doesn’t remember being bitten by a tick. The rash most often appears 3–5 days after the fever and headache start, but can take longer.
Bacteria called Rickettsia rickettsia cause RMSF. Ticks spread the bacteria when they bite a person. Infections are most common in the southeastern part of the United States, but can happen in other states.
RMSF isn’t contagious, and can’t spread from person to person. The infection spreads through the bite of an infected tick.
Doctors usually diagnose RMSF based on:
A blood test and skin test can help diagnose RMSF, but getting the results takes time, so treatment often starts before the results are ready.
Doctors treat RMSF with antibiotics. Depending on how serious the symptoms are, a person might take these by mouth or get them through an IV (intravenously). Most people recover within a few days.
An infection that isn’t treated right away can cause serious health problems, which can affect the brain, lungs, heart, and kidneys. Someone with these problems may need long-lasting treatment. RMSF that isn’t treated can be life-threatening.
To help protect yourself from Rocky Mountain spotted fever, follow these outdoor safety tips:
Not all ticks carry the RMSF bacteria, but it’s wise to remove any right away. The longer a tick stays attached to the skin, the greater the chance of infection. It usually takes several hours for a tick to spread the bacteria that cause RMSF when it’s attached to the skin.
To remove a tick, use tweezers to grasp it by the head, as close to the skin as possible. Pull steadily until it comes loose. Without touching the tick, preserve it in a jar or plastic bag until you can show it to your doctor. Disinfect the bite area with alcohol, wash your hands, and call your doctor.
Check pets’ skin and fur for ticks whenever they have been playing in tick-infested areas. Follow your veterinarian’s advice about collars and other products that can keep your pet tick-free.
If you’re recovering from RMSF at home, take the antibiotics as the doctor directed. Rest in bed until the fever and other symptoms are gone.
Call the doctor if you think a tick bit you or you have:
Scheduled for a hospital stay? Knowing what to expect can make it a little easier.
Generally, insect bites and stings are harmless. Find out how to keep pests from ruining your fun.
Does the thought of Lyme disease make you worry about enjoying the great outdoors? Here’s some information to help you lower your risk for Lyme disease.
Lyme disease can be treated if it’s caught early. Find out what causes it, how it’s treated, and how to prevent it.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995-2020 KidsHealth®. All rights reserved.
Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.