Your symptoms of abdominal pain, cramps, nausea, frequent stools, and perianal pain over six months with normal ultrasound, mild gastritis on endoscopy, and normal blood tests suggest a possible chronic gastrointestinal condition such as irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), or a chronic infection including parasitic causes.

🩺 Possible Causes

• Irritable Bowel Syndrome (IBS): Commonly causes abdominal pain, altered bowel habits, and cramps without structural abnormalities.
• Inflammatory Bowel Disease (IBD): Conditions like Crohn’s disease or ulcerative colitis can cause perianal pain and frequent stools; mild gastritis may coexist.
• Parasitic Infection: Despite normal ultrasound and blood tests, some parasitic infections can cause these symptoms and may require stool tests for diagnosis.

🩺 Recommended Next Steps

• Consult a gastroenterologist for further evaluation, including stool studies for parasites, inflammatory markers, and possibly colonoscopy.
• Keep a symptom diary noting stool frequency, consistency, and any triggers.
• Avoid self-medicating with anti-parasitic drugs without confirmed diagnosis.

⚠️ When to Seek Urgent Care

• Severe abdominal pain worsening suddenly
• Blood in stool or black tarry stools
• High fever or signs of dehydration

Seeing a gastroenterologist will help clarify the diagnosis and guide appropriate treatment. If you want, I can explain more about any of these conditions or tests.To narrow down potential causes, we will need some more information.I understand you're dealing with abdominal pain, cramps, nausea, frequent stools, and perianal pain. To better understand your situation, could you please share your age and gender?