Diarrhea can be more than just a source of aggravation. Infectious diarrhea caused by a virus, bacteria, or parasite can lead to serious illness. Diarrhea can be caused by many conditions. Some types of diarrhea are contagious and can be spread between people and even from animals to people. Diarrhea can also be a symptom of a disease that is not infectious.For healthy people, occasional
Diarrhea can be caused by many conditions. Some types of diarrhea are contagious and can be spread between people and even from animals to people. Diarrhea can also be a symptom of a disease that is not infectious.
For healthy people, occasional diarrhea usually doesn't last long and gets better on its own without causing major problems. However, diarrhea is the second leading cause of death in children in the developing world. It's also a major contributor to work absenteeism and loss of productivity in the United States' workforce.
The elderly, very young children, and people with compromised immune systems are especially vulnerable to diarrheal infections. They are at an increased risk of complications related to severe diarrhea including dehydration and the need for hospitalization and fluid management. They may also be more likely to die from these complications.
This article will go over the types of diarrhea, the causes of diarrhea, how to tell if diarrhea is contagious, and how long infectious diarrhea usually lasts. You will also learn about infectious diarrhea treatments and how to prevent diarrhea.
Diarrhea can be contagious but it is not always. To find out if a case of diarrhea is infectious or not, you'll need to see a healthcare provider.
What is considered infectious diarrhea, how long infectious diarrhea lasts, and what can be done to treat and prevent diarrhea caused by infections depends on the cause.
The most common causes of diarrhea are viral, bacterial, and parasitic infections. Infectious diarrheal diseases are contagious, meaning that they can be spread between people.
The term gastroenteritis typically refers to bacterial or viral infections that affect both the stomach and small/large intestines. These patients present with nausea, vomiting, and abdominal pain, as well as diarrhea.
Diarrheal infections are typically spread through the fecal-oral route. This means that fecal matter that has infectious particles in it gets on a surface or person. Things that people touch a lot, like doorknobs, buttons, and counters can be easily contaminated.
If people don't wash their hands after they use the bathroom, they can spread the infection when they touch other people (for example, by shaking hands). People can also catch infections that cause diarrhea if a sick person makes food for them.
Kids often spread infectious diarrhea easily because they tend to put their hands and objects in their mouths.
Animals can also contaminate sources of water and surfaces with pathogens that spread infectious diarrhea. These illnesses can also be transmitted if people don't wash their hands after touching an animal.
"Dysentery" refers to patients with infectious or inflammatory diarrheal diseases that result in the frequent passage of smaller stools containing varying amounts of mucus and/or blood.
Infectious diarrhea often comes quickly and does not last longer than a few days, though some illnesses may cause diarrhea that lasts a week or two.
Once the cause is found, most infectious diarrheal diseases can be treated. However, some types of infectious diarrhea are harder to treat. People may have diarrhea that lasts a long time and leads to complications.
Viruses are the most common cause of diarrhea. There are four specific viruses that most often cause infectious diarrhea:
Infectious diarrhea caused by a virus is usually highly contagious.
Bacterial diarrhea is a major contributor to illness and death worldwide. Although less common in the U.S. than viral diarrhea, bacterial diarrhea disorders more often lead to dysenteric disease due to the development of ulcers and inflammation in the intestines. The bacteria that commonly cause infectious diarrheal disease include:
Bacterial infections that cause diarrhea can spread quickly between people, but it's more common for people to get sick after drinking water or eating food that is contaminated.
Protozoa are the primary cause of parasitic diarrhea both in the U.S. and around the world. These single-celled organisms come in many forms. Among the three most common causes of parasitic diarrhea:
Infectious diarrhea caused by parasites is usually transmitted through infected drinking water.
Diarrhea can also be non-infectious. People with medical conditions affecting the digestive, immune, or endocrine (hormone) systems can have diarrhea as a symptom. Diarrhea caused by these conditions cannot be spread to other people.
Medical conditions that can cause non-infectious diarrhea include:
People with these conditions may have acute episodes of diarrhea when the disease flares up, or they may have chronic diarrhea that lasts a long time.
You may not be able to tell if diarrhea is contagious or not based on how you feel. The symptoms of infectious diarrhea can be similar to non-infectious diarrhea. If you have an infection that's causing diarrhea, you won't necessarily know which pathogen is causing it.
To diagnose infectious diarrhea, providers will gather information from a patient—for example, if they have been around sick people or traveled recently. They can also run a series of tests to identify the cause of diarrhea.
Finding out whether diarrhea is infectious or not has several steps:
The treatment for diarrhea depends on the cause and how sick a person is.
For infectious diarrheal diseases, there are medications that can be given. For example, antibiotics and antivirals can treat bacterial and viral infections, respectively, while antimicrobial agents can treat diarrhea caused by protozoans.
Anti-diarrheal medications can be prescribed along with oral rehydration therapy to prevent or treat the loss of fluid from diarrhea. The fluid can also be delivered intravenously (through a vein) if the dehydration is especially severe.
You may have a fever with infectious diarrhea. If you have a fever and feel sick when you have diarrhea, an over-the-counter (OTC) fever-reducing or pain-relieving medication may help.
An ounce of prevention is truly worth a pound of cure when it comes to avoiding diarrhea. Here are a few tips for preventing diarrhea infections at home and while you're out: