amoeba

This is a parasitic disease. You will do a history and physical. Assess the abdomen. Look for any of these signs and symptoms:

• diarrhea
  
• diffuse abdominal tenderness
  
• tenderness over the cecum and ascending colon
  
• stomach pain and cramps
  
• fever
  
• chills
  
• bloody, mucous diarrhea
  
• stools positive for E. histolytica
  
• weight loss
  
• weakness,
  
• abdominal swelling
  
• pain in the upper-right abdomen
  
• cough
  
• nausea
  
• jaundice

Complications include appendicitis and perforation of the intestinal wall. Infestation can spread to the liver (very common), lungs, pleural cavity, peritoneum and brain.

http://www.who.int/vaccine_research/diseases/soa_parasitic/en/index1.html

http://www.nhsdirect.nhs.uk/articles/article.aspx?articleId=18 - includes a page of symptoms

http://www.medscape.com/viewarticle/540145 - Treatment Options for the Eradication of Intestinal Protozoa