About this symptom
Acute diarrhoea means recently developed frequent loose stools. Infection, food exposure, medicines and other causes are possible. The most immediate risk for many patients is fluid loss.
What this topic means
The duration, frequency and severity of loose stools differ. A short episode does not necessarily require antibiotics or stool testing, while persistent symptoms or alarm signs may need investigation.
When to seek medical advice
Document stool frequency, cramps, fever, vomiting, blood, recent travel, medicines and contacts with similar illness. Thirst, dry mouth, dizziness and reduced urination may indicate dehydration.
Options and limitations
Acute and prolonged diarrhoea have different diagnostic considerations. Food poisoning, intestinal infection and a medication reaction may overlap in symptoms; self-diagnosis can miss important causes.
Assessment and preparation
A medical assessment considers vital signs, hydration, abdominal findings and risk factors. Stool samples, blood tests or imaging are reserved for specific clinical indications, not ordered for every episode.
Treatment, risks and follow-up
Oral rehydration and appropriate fluids can help replace losses when drinking is possible. Treatment of the underlying cause and any medicines must be tailored; antibiotics are not routine for every diarrhoeal illness.
When urgent help is needed
Bloody stools, severe abdominal pain, fainting, confusion, marked dehydration or inability to retain fluids requires urgent care. Call 103 if the condition is severe or life-threatening.
Related information
Acute intestinal infection; Food poisoning; Nausea and vomiting in adults.
Signs and symptoms
Document stool frequency, cramps, fever, vomiting, blood, recent travel, medicines and contacts with similar illness. Thirst, dry mouth, dizziness and reduced urination may indicate dehydration.
Diagnosis and tests
A medical assessment considers vital signs, hydration, abdominal findings and risk factors. Stool samples, blood tests or imaging are reserved for specific clinical indications, not ordered for every episode.
Care and treatment approaches
Oral rehydration and appropriate fluids can help replace losses when drinking is possible. Treatment of the underlying cause and any medicines must be tailored; antibiotics are not routine for every diarrhoeal illness.
When to seek urgent care
Bloody stools, severe abdominal pain, fainting, confusion, marked dehydration or inability to retain fluids requires urgent care. Call 103 if the condition is severe or life-threatening.
Frequently asked questions
What makes acute diarrhoea different from prolonged symptoms?
Acute diarrhoea begins recently; lasting or recurrent symptoms broaden the list of possible causes.
Does everyone need a stool test?
No. Testing depends on duration, severity, blood in stool and individual risks.
Should I start antibiotics myself?
No. Many episodes do not benefit and inappropriate antibiotics can cause harm.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
