Nausea

Overview

Nausea is the sensation of unease and discomfort in the stomach with an urge to vomit. It is a common symptom with numerous potential causes ranging from benign to serious. This data type enables tracking of nausea episodes for pattern identification and clinical correlation.

Health Significance

• Symptom Monitoring: Nausea accompanies many conditions requiring tracking
• Medication Side Effects: Common adverse effect of many drugs, especially chemotherapy, opioids, and antibiotics
• Pregnancy: Morning sickness tracking in early pregnancy
• Migraine Association: Often precedes or accompanies migraines
• Gastrointestinal Health: Indicator of GI disturbances
• Treatment Response: Monitors effectiveness of antiemetics

Clinical Context

Common causes of nausea include:

• Gastrointestinal: Gastroenteritis, GERD, gastroparesis, obstruction
• Medications: Chemotherapy, opioids, NSAIDs, antibiotics, anesthesia
• Neurological: Migraines, vestibular disorders, increased intracranial pressure
• Pregnancy: First trimester morning sickness, hyperemesis gravidarum
• Metabolic: Diabetic ketoacidosis, uremia, liver failure
• Infections: Viral or bacterial infections, food poisoning
• Psychological: Anxiety, eating disorders

When to Seek Medical Attention

• Nausea persisting more than 48 hours without clear cause
• Nausea with severe abdominal pain
• Signs of dehydration (dark urine, dizziness, dry mouth)
• Nausea following head injury
• Blood in vomit or coffee-ground appearance
• Nausea with high fever
• Nausea with severe headache and stiff neck
• Unable to keep down any fluids
• Nausea with chest pain or shortness of breath
• Pregnancy with severe nausea causing weight loss

Pattern Recognition

Tracking nausea can reveal:

• Medication timing relationships
• Dietary triggers
• Migraine prodrome patterns
• Morning vs. evening patterns
• Menstrual cycle correlations
• Motion or positional triggers
• Stress-related patterns
• Response to antiemetic treatments

Caveats & Limitations

• Subjective severity difficult to standardize
• Does not capture duration of episodes
• Cannot identify underlying cause
• No integration with vomiting data in same record
• Does not track fluid intake or hydration status
• Brief episodes may not be logged
• Cannot differentiate nausea types (motion, medication, etc.)