Tick-Borne Diseases in NJ: Symptoms, Prevention, and When to Call Your Doctor

This article is for information only and is not medical advice. Tick-borne illnesses are diagnosed and treated by health care providers. If you have symptoms after a tick bite, talk to your doctor promptly.

Lyme disease

Lyme disease, caused by the bacterium Borrelia burgdorferi and spread by the deer tick, is by far the most common tick-borne illness in New Jersey. The CDC estimates about 476,000 people are diagnosed and treated for Lyme each year in the US.

Symptoms: Early signs usually appear 3 to 30 days after the bite. In 60 to 80 percent of cases, a circular rash called erythema migrans expands around the bite, sometimes with the classic bull’s-eye look, sometimes just a solid red patch. Many cases never develop the rash at all. Other early symptoms include fever, chills, headache, fatigue, muscle and joint aches, and swollen glands. If untreated, the infection can spread to the joints, heart, and nervous system over weeks to months.

Treatment: Antibiotics, usually doxycycline, amoxicillin, or cefuroxime, for 10 to 14 days in early disease. Patients treated early usually recover quickly and completely. Longer courses are used for later-stage disease affecting the nerves, heart, or joints.

Anaplasmosis

Spread by the same deer tick, anaplasmosis has been rising significantly in New Jersey over the past two decades.

Symptoms: Fever, headache, muscle aches, chills, and fatigue, typically starting 1 to 2 weeks after the bite. It looks a lot like the flu, which is why the tick-bite history matters. Severe cases can occur, especially in older or immunocompromised people.

Treatment: Doxycycline. The same antibiotic that treats Lyme also covers anaplasmosis, which is convenient when a patient may have been exposed to both.

Babesiosis

Also from the deer tick, but a different kind of organism entirely: Babesia microti is a parasite that infects red blood cells. Babesiosis cases are also climbing in NJ.

Symptoms: Fever, chills, sweats, fatigue, and muscle aches. Some infections are mild or cause no symptoms; severe cases can cause the breakdown of red blood cells and are dangerous for people without a spleen, the elderly, or the immunocompromised.

Treatment: Because it is a parasite, the antibiotics used for Lyme do not work. Doctors use atovaquone plus azithromycin for mild to moderate cases. This is a key reason accurate diagnosis matters: treating babesiosis like Lyme will fail.

Ehrlichiosis

Spread mainly by the lone star tick, which is expanding across New Jersey.

Symptoms: Fever, headache, fatigue, and muscle aches, usually within 1 to 2 weeks of the bite. A rash is uncommon in adults but more common in children.

Treatment: Doxycycline, and doctors are advised not to delay treatment while waiting for lab results when ehrlichiosis is suspected.

Alpha-gal syndrome (red meat allergy)

This one surprises people. A bite from the lone star tick can trigger alpha-gal syndrome, a delayed allergic reaction to red meat, beef, pork, lamb, and sometimes dairy and gelatin. Symptoms, hives, stomach cramps, or worse, typically appear 3 to 6 hours after eating meat, which makes the connection hard to spot. If you develop new meat-related symptoms after tick bites, tell your doctor about the tick exposure.

When to call your doctor

Prevention that works

• Do full-body tick checks after time outdoors, including kids and pets. Nymphs are poppy-seed sized.
• Shower within a couple of hours of coming inside.
• Use EPA-registered repellents on skin and treat clothing and gear as directed.
• Keep yard edges clear of leaf litter and brush where ticks quest.
• Remove attached ticks promptly with fine-tipped tweezers. Most Lyme transmission needs more than 24 hours of attachment.
• Consider season-long yard treatments to cut the tick population where your family plays.

Step-by-step removal and bite care is covered in our guide to handling and preventing tick bites.

Laurie’s field note: I am not a doctor, and I do not play one in customers’ yards. But I have watched too many people shrug off a tick bite because there was no bull’s-eye rash. The rash does not always show up. If you get flu-like symptoms in June or July after being outside, tell your doctor about the tick exposure. That one sentence changes the diagnosis.

FAQ: Tick-borne diseases

The Takeaway: Early beats everything

Every tick-borne disease in New Jersey is easier to treat early. Learn the symptoms, watch for 30 days after any bite, and call your doctor at the first sign of rash, fever, or flu-like illness. The best outcome starts with the fastest phone call.

Trusted sources: CDC: How Lyme Disease Spreads • NY Dept. of Health: Lyme Disease Fact Sheet • Treating Lyme Disease and Other Tick-Borne Illnesses