how do i know if i have a parasite

To know if one has a parasite, common symptoms include digestive problems like unexplained constipation, diarrhea, bloating, gas, nausea, and vomiting. Fatigue, chronic exhaustion, unexplained weight loss, persistent hunger, anal itching, skin rashes or itching, and teeth grinding during sleep are also signs that may indicate a parasitic infection. Some parasitic infections cause symptoms such as stomach cramps, muscle and joint pain, swollen lymph nodes, and even anemia or iron deficiency. Diagnosis typically involves stool sample tests to look for parasite eggs or the parasites themselves, special tape tests for certain worms, blood tests to detect parasite-specific antibodies or antigens, and sometimes endoscopy or colonoscopy for direct visualization of parasites in the intestines. Physical examination and detailed questioning by a healthcare provider are important for an accurate diagnosis since symptoms can overlap with other conditions. If suspicious symptoms exist—especially after travel, contact with contaminated water or soil, or exposure to others with parasitic infections—consulting a healthcare provider for appropriate testing is advised.