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Entamoeba histolytica
Mostly this disease does not exhibit any symptoms. If symptoms occur, they are seen 7 to 28 days after being exposed to the parasite.
The common symptoms are

Mild symptoms:

  • Abdominal cramps
  • Diarrhea
      • 3 - 8 semiformed stools per day
      • Soft stools with mucus and occasional blood
  • Fatigue
  • Excessive gas
  • Rectal pain while having a bowel movement
  • Unintentional weight loss

Severe symptoms

  • Unintentional weight loss
  • Abdominal tenderness
  • Bloody stools
    • Liquid stools with streaks of blood
    • 10 - 20 stools per day
  • Fever
  • Vomiting
Treatment depends on the severity of infection. Usually, metronidazole is given orally for 10 days, followed by paromomycin or diloxanide.
If vomiting, medications through a vein (intravenously) is recommended. Medicines to stop diarrhea are usually not prescribed because they can make the condition worse.
After treatment, the stool should be rechecked to make sure that the infection has been cleared.
Preventive measures
Drink purified or boiled water and do not eat uncooked vegetables or unpeeled fruit. Public health measures include water purification, water chlorination, and sewage treatment programs.
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