Several diseases you may be unaware of can cause petechiae. Rocky Mountain Spotted Fever comes from tick bites. Sometimes ticks are infected with bacteria called rickettsia. Symptoms include fever, muscle aches, and headaches, as well as a rash around the site of the bite. Prompt medical attention will ensure recovery from the disease. Treatment usually involves antibiotics, lab testing, and sometimes x-rays or other imaging. Sepsis is a life-threatening blood infection. When trying to fight off the infection, your blood vessels release chemicals that can cause inflammation. The symptoms of sepsis include low blood pressure, fever, high heart rate, difficulty breathing, and mental confusion. Treatment of sepsis involves antibiotics and IV fluids.
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