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Diarrhea: Symptoms, Causes, and the Importance of Accurate Diagnosis

Diarrhea, like constipation, is a symptom with multiple potential causes, including intestinal infections, food sensitivities, colitis, and stress, underscoring the need for precise diagnosis and caution against merely treating symptoms without identifying their root causes. Different types of diarrhea, such as colitis-induced or the so-called traveler's diarrhea, necessitate specific treatments. Defined as the occurrence of loose, watery stools more than three times within a day, diarrhea is generally a brief issue that resolves without intervention. Yet, if it persists, it may indicate more serious health concerns and can lead to dehydration. This loss of vital fluids is especially risky for children and the elderly and requires immediate attention to prevent severe complications.
The condition may manifest temporarily or as a long-standing issue, with causes including:
- Bacterial infections from eating or drinking contaminated sources, with Campylobacter, Salmonella, Shigella, and E. coli being typical agents.
- Viral infections from pathogens like rotavirus, Norwalk virus, cytomegalovirus, herpes simplex, and viral hepatitis.
- Food intolerances, notably lactose intolerance.
- Parasitic infections from organisms such as Giardia, Entamoeba, and Cryptosporidium.
- Adverse reactions to medications, including antibiotics, blood pressure treatments, and magnesium-containing antacids.
- Chronic intestinal conditions like inflammatory bowel disease or functional disorders such as irritable bowel syndrome, where the intestines don't function normally.
Diarrhea can manifest with symptoms such as abdominal cramps, bloating, nausea, and a pressing need for restroom access. In some cases, it may be accompanied by fever or the presence of blood in the stools. Diarrhea that persists for less than three weeks, termed acute, typically stems from infectious causes. Conversely, chronic diarrhea, lasting beyond three weeks, is frequently a sign of underlying conditions like irritable bowel syndrome or inflammatory bowel diseases. In newborns and infants, diarrhea poses a significant risk of dehydration, a condition marked by symptoms including thirst, reduced urine output, dry skin, tiredness, and dizziness. In children, additional dehydration indicators include a dry mouth and tongue, no tears when crying, prolonged periods without wet diapers, high fever, lethargy or irritability, skin that stays folded when pinched, and sunken features in the abdomen, eyes, or cheeks.
To counteract the loss of fluids and vital electrolytes like potassium and sodium during diarrhea episodes, replenishment is crucial since the body relies on these for proper functioning. While water is key to preventing dehydration, it lacks electrolytes. Consuming chicken or beef broth can help maintain sodium levels, while fruit beverages are beneficial for potassium intake. For children, specially formulated rehydration solutions, available over the counter, provide an effective means to restore necessary nutrients lost during diarrhea.
Managing Diarrhea: Fluid Replacement and Dietary Recommendations
For most instances of diarrhea, the primary treatment involves replenishing fluids to prevent dehydration. While medications to halt diarrhea can be useful in certain situations, they are generally not advised for cases caused by bacterial or parasitic infections. This is because halting the diarrhea could confine the pathogens within the intestines, extending the duration of the illness. It's advisable to steer clear of milk products, as well as foods that are fatty, fiber-rich, or overly sweet, since these can exacerbate the condition. As symptoms begin to ease, introducing soft and bland foods like bananas, plain rice, boiled potatoes, toast, crackers, cooked carrots, and skinless, fat-free baked chicken can aid recovery. For children experiencing diarrhea, pediatricians often recommend the BRAT diet, an acronym for bananas, rice, applesauce, and toast, to help ease symptoms and support recovery.
A Natural Remedy for Diarrhea Relief
A number of astringent herbs are renowned for their effectiveness in treating diarrhea, though it remains a question whether their efficacy is due to being specific remedies or simply showcases of the general astringent properties of herbs. Meadowsweet (Filipendula ulmaria) is often considered the most effective gentle treatment for diarrhea, particularly beneficial in toning the small intestine's lining and ideal for managing childhood diarrhea. Other notable herbs for relief include Agrimony (Agrimonia eupatoria), Lady's Mantle (Alchemilla spp.), and Wild Geranium (Geranium maculatum). However, stronger astringents like oak bark (Quercus spp.) are recommended only as a measure of last resort.
- 1 part Agrimonia eupatoria
- 1 part Geranium maculatum
- 1 part Matricaria recutita
Combine dried herbs and prepare as an infusion; drink regularly throughout the day until symptoms subside.
Sources
- MS Gião, S Gomes, AR Madureira, A Faria, D Pestana, Effect of in vitro digestion upon the antioxidant capacity of aqueous extracts of Agrimonia eupatoria, Rubus idaeus, Salvia sp. and Satureja montana, Food Chemistry, 2012.
- MG Pour, et al. A comprehensive review on phytochemical, pharmacological and therapeutic properties of Agrimonia eupatoria L., Journal of Hebrbmed Pharmacology, 2010.
- AE Al-Snafi, The pharmacological and therapeutic importance of Agrimonia eupatoria-A review, Asian Journal of Pharmaceutical Science, 2015.
- D Ivanova, D Vankova, M Nashar, Agrimonia eupatoria tea consumption in relation to markers of inflammation, oxidative status and lipid metabolism in healthy subjects, Archives of Physiology and Biochemistry, 2013.
- MŽ Muruzović, KG Mladenović, OD Stefanović, Extracts of Agrimonia eupatoria L. as sources of biologically active compounds and evaluation of their antioxidant, antimicrobial, and antibiofilm activities, Journal of Food and Drug Analysis, 2016.
- VC Graça, ICFR Ferreira, Bioactivity of the Geranium genus: a comprehensive review, Current Pharmaceutical Design, 2020.
- JB Zadeh, NM Kor, ZM Kor, Chamomile (Matricaria recutita) as a valuable medicinal plant, International journal of Advanced, 2014.
- AH Gilani, S Bashir, KH Janbaz, A Khan, Pharmacological basis for the use of Fumaria indica in constipation and diarrhea, Journal of Ethnopharmacology, 2005.
- MH Mehmood, N Aziz, MN Ghayur, Pharmacological basis for the medicinal use of psyllium husk (Ispaghula) in constipation and diarrhea, Digestive Diseases and Sciences, 2011.
This article is for general wellness and educational purposes only and is not medical advice. Consult a qualified healthcare provider before using herbs — especially if you are pregnant, nursing, or taking medication.