Charles Patrick Davis, MD, PhD
Dr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.
William C. Shiel Jr., MD, FACP, FACR
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
In this Article
- Tick facts
- What are ticks?
- What are tick bite symptoms and signs?
- What diseases do ticks transmit (act as vectors) to humans?
- How is a tick bite diagnosed?
- What are the symptoms and signs of diseases transmitted by ticks?
- What is the treatment for a tick bite?
- How is a tick removed from the skin?
- What is the prognosis (outlook) for people who get a tick bite?
- What are the risk factors for tick bites?
- How are bites from ticks prevented?
- Where can I find more information about ticks?
What are tick bite symptoms and signs?
Unfortunately for the purpose of detection, the tick bite is usually painless and remains that way even after the tick stops the blood meal and falls off of the skin. Later, the bite site may develop itching, burning, redness, and rarely, localized intense pain (some soft tick bites) in some individuals. A few individuals may be sensitive or allergic to tick bites (tick saliva secretions) and develop rash, shortness of breath, swelling, numbness, or paralysis. However, the majority of individuals with tick bites develop no symptoms, and many people do not remember getting bitten.
Some immediate symptoms that infrequently or rarely develop during or immediately after a tick bite may be fever, shortness of breath, weakness, vomiting, swelling, weakness or paralysis, headache, confusion, or palpitations. Individuals with these symptoms should be seen immediately by a doctor.
Recently, researchers have found that the tick bite (mainly the saliva produced by the lone star tick) has caused thousands of people to become allergic to red meat (beef, pork, venison, and occasionally, milk). People can eat poultry (chicken, turkey) and have no allergic reactions. When they eat red meat, they develop swelling and hives. Some may develop anaphylaxis. The reaction is thought to be due to an alpha-gal antigen in the tick's gut and/or saliva that stimulates an immune response that results in an allergic reaction when red meat is consumed.
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