| | Diet & Nutrition | Fad Diets

Understanding Vomiting Without Eating: Causes and When to Seek Medical Advice

Vomiting unrelated to recent eating suggests non-gastrointestinal or central causes. It's a symptom, not a diagnosis, and warrants systematic evaluation.

Potential Causes

Red Flags for Urgent Evaluation

Hematemesis or coffee-ground emesis
Bilious (green) vomiting → obstruction until proven otherwise
Projectile vomiting (infants: pyloric stenosis; adults: increased ICP)
Severe headache, neck stiffness, altered mental status
Signs of dehydration (orthostasis, oliguria, dry mucosa)
Abdominal distension, tenderness, absent bowel sounds

Diagnostic Approach

History: timing, triggers, content, associated symptoms, medications.
Exam: vitals, hydration, neuro, abdominal, fundoscopy.
Labs: BMP, CBC, LFTs, amylase/lipase, β-hCG, ketones, drug screen.
Imaging: CT head (neuro signs), abdominal X-ray/CT (obstruction).
Endoscopy if upper GI source suspected.

Don't self-treat persistent unexplained vomiting—underlying pathology may be serious.

Fad Diets - Related Articles

Category	Examples
Neurological	Increased ICP (tumor, hemorrhage, hydrocephalus), migraine, vestibular disorders, concussion
Metabolic/Endocrine	DKA, adrenal insufficiency, uremia, hypercalcemia, thyrotoxicosis, pregnancy (hyperemesis)
Toxic/Pharmacologic	Medication side effects (opioids, chemo, antibiotics, digoxin), alcohol, toxins
GI Obstruction	Pyloric stenosis, SBO, gastric outlet obstruction (vomiting may be feculent)
Psychiatric	Bulimia (purging without binge), rumination disorder, functional nausea/vomiting
Cyclic Vomiting Syndrome	Stereotyped episodes, symptom-free intervals; migraine association