Unexplained abdominal pain or cramping
Ongoing diarrhea or constipation
Nausea or vomiting
Bloating or excess gas
Unexplained weight loss
Increased hunger or loss of appetite
Fatigue or weakness
Itching around the anus, especially at night
Visible worms or segments in stool
Blood or mucus in stool
Rash or hives without a clear cause
Fever without a clear cause
Muscle aches or joint pain
Trouble sleeping or restlessness
Anal or vaginal itching
Anemia or pale skin
Frequent headaches
New food intolerances
Travel history to high-risk areas
Exposure to contaminated water or undercooked food
Contact with infected people or animals
Positive stool test or other medical test