Symptoms

The first signs and symptoms of cryptosporidium infection, which usually appear within a week after infection, might include:

• Watery diarrhea
• Dehydration
• Lack of appetite
• Weight loss
• Stomach cramps or pain
• Fever
• Nausea
• Vomiting

Symptoms can last for up to two weeks, though they might come and go for up to a month, even in people with healthy immune systems. Some people with cryptosporidium infection have no symptoms.

When to see a doctor

Seek medical attention if you develop watery diarrhea that does not get better within a few days.