No menu items!

COSTA RICA'S LEADING ENGLISH LANGUAGE NEWSPAPER

HomeTopicsExpat LivingExpat Battles Exotic Bugs and Parasites in Costa Rica Paradise

Expat Battles Exotic Bugs and Parasites in Costa Rica Paradise

When I first made the move from the northern US to the tropics, it took my immune system a while to adjust. In my first four years south of the Tropic of Cancer (two in the US Virgin Islands, two here in Costa Rica), I contracted cases of undulant fever, dengue fever, a serious heat rash, a few cases of food poisoning, flu that felt more like malaria, and the piece de resistance, an intestinal parasite known here as la babosa, that lodged in my gut and grew and spewed to an ungodly two by five inches (it looks worse in metric, which is how it was recorded on the medical record– five by twelve centimeters). The ulcerating parasite was removed during emergency surgery and left a permanent zipper scar that runs north to south just to the right of my navel.

By that time, I wondered if I ever should have left the northern US, with its four distinct seasons and a solid stretch of sub-freezing weather that helped to keep all those pesky bacterial microbes temporarily at bay. Once I was plunged into the year-round warm weather I had often dreamed about, reality laughed at my untested immune system. Yet following the surgery, I emerged from the physical doldrums of the previous years a new man, with a new, beefed-up immunity to match. Aside from the to-be-expected occasional cases of grippe, I have lived three decades resistant to the maladies that once plagued me.

One ongoing malady I have never completely whipped is the common amoebic parasite or worm or whatever it is that makes me run to the bathroom thirty minutes after my breakfast and leaves me emptied out, with a growling belly and a dull headache. Ticos I know commonly blame lombrices; most dictionaries define lombrices as earthworms, but I think I would feel an earthworm burrowing through the pockets of my intestines. More likely they are roundworms or pinworms or hookworms or ascariasis or flukes. If it’s not a worm, than it’s likely a protozoa such as giardia, cyclospora or maybe entomoeba hystolytica.

I am clueless as to which I might have, or even how to correctly pronounce the protozoa, but I do know that I need to make a trip to the pharmacy– no prescription needed, at our pharmacies you can still get back room injections of anything from Vitamin B-12 for lethargy to ephedrine for an asthma attack. I always ask for the generic, 3 day, 6 pill regimen and they give me six hits of Nitazoxanida and the first day, two pills in, I feel better. I can eat without my nutrients being hijacked and visits to the bathroom are unrushed.

If only there was a pill to take for the damage left by the coloradillos. I spent the weekend on a farm in the Osa, that unspoiled corner of Costa Rica where nature and wildlife still rules supreme, a slice of old Costa Rica that has resisted overdevelopment. Coloradillas are tiny red mites, a pesky relative of spiders, scorpions and ticks. They are found in grassy fields, forests, green areas, along rural shorelines. They attach themselves to the skin with their claws and then inject their saliva. The saliva contains digestive juices that dissolve skin cells, which the coloradilla then eats. After feeding, the coloradilla sheds its skin and leaves a red welt.

While in the Osa, I spent time in grassy fields, forests, green areas, and along rural shorelines. So, a day later, when I look down at my ankles and scratch away at the red welts until they are on the verge of bleeding, it comforts me in some odd way to know that, endless itchiness aside, I was right there in the cycle of nature, contributing to the brief life of a coloradilla.

Trending Now

Cartago Reverses Business Closure Order for Independence Night

Cartago has withdrawn its Independence Day business closure order, and the Security Ministry now says the decision was never its to make.

Costa Rica Investigates Alleged Mass Data Leak that Included the President

Costa Rica's National Cybersecurity Directorate is investigating a dark web posting in which an unidentified threat actor claims to hold tens of millions of...

Tropical Wave 41 Crosses Costa Rica With Afternoon Storms and 75 km/h Gusts

Tropical wave No. 41 moved into Costa Rica before dawn today, and the part that matters for the rest of your day arrives after...

Arajet Pauses Its Costa Rica Flights Until November

The Dominican low-cost carrier has not flown to Costa Rica since 8 August and has nothing scheduled until November. Here is what it means if you were counting on the route.

Costa Rica Independence Day 2026 Brings a Tuesday Holiday and Rain

Plan for rain, road closures and holiday pay rules as Costa Rica marks 205 years of independence on Tuesday, September 15.

Road Closures Start Monday for Costa Rica’s Independence Holiday

If you are driving anywhere in the Central Valley on Monday afternoon or Tuesday morning, add time. Costa Rica marks 205 years of independence...

Costa Rica Airport Introduces Faster Biometric Immigration Checks

If you are flying through Juan Santamaría International Airport on a Costa Rican passport, you can now clear immigration without talking to an officer....

Shelton Reaches First Grand Slam Final After US Open Comeback

Ben Shelton moved within one victory of ending a 23-year wait for an American men’s Grand Slam singles champion after beating Frances Tiafoe on...

Costa Rica Whisky Fest Returns Today with Tastings, Jazz and a Bit of History

Whisky may not be the first drink associated with Costa Rican culture, but a growing community of collectors, curious beginners and serious enthusiasts is...
🌴 The Weekly Pura Vida

Costa Rica, Once a Week

The week's top stories, weather & insider tips — delivered every Sunday. One email, zero clutter.

🔒 Free. No spam. Unsubscribe anytime.

Loading…

Latest News from Costa Rica

Costa Rica Coffee Maker Chorreador
Costa Rica Car Rentals
Costa Rica Travel Insurance
Costa Rica Travel