28-year-old female with symptoms of severe cough whenever she consumes

28-year-old female with symptoms of severe cough whenever she consumes even mildly spicy food. It may not be the spice level might be just 2 or 3 out of 10. She develops severe cough. So she went to the pulmonologist. They gave her a course of steroids and antibiotics, following which there was only very mild decrease in symptoms. Later on went to the same pulmonologist for review and they said that it was gastroesophageal reflux disease and gave her sodium bicarbonate, pantop, a cough syrup for one month. Her symptoms have not decreased significantly. There is mild improvement, but now she is coughing and at the same time she is vomiting the food out. There is no bleeding, just the food particles. Now it has become really difficult for her to consume even very mildly spicy food. She is able to eat only very bland food. So she is not satisfied with the treatment. The basic symptoms are severe cough following intake of spicy food or fatty food, followed by an episode of one or two episodes of vomiting. She has no issues when she consumes very bland food. So what is your top five differentials and the treatment for the first three differentials and the prognosis? Patient is from Kerala, Trivandrum. 28-year-old female. No other history or no other investigation reports are available.

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Clinical Analysis: 28F, Severe Cough + Vomiting Triggered by Spicy/Fatty Food

This is a fascinating and under-recognized clinical scenario. The key features driving the differential are:

Food-triggered (spicy and fatty food specifically) severe cough
Followed by 1-2 episodes of vomiting (undigested food, no blood)
Completely asymptomatic with bland food
Partial/no response to empirical GERD treatment (PPI + sodium bicarbonate + cough syrup)
Young female, Kerala (South Indian diet heavy in spices, coconut oil, fat)
No response to antibiotics/steroids course (argues against simple infectious etiology)

Top 5 Differentials

1. Eosinophilic Esophagitis (EoE) - Most Likely

This is the leading diagnosis. EoE is a chronic, immune-mediated, food antigen-driven esophageal disease. In adults, it presents with dysphagia, chest pain, food bolus impaction, and - critically - post-prandial vomiting and cough triggered by specific foods. The foods triggering reactions in EoE are typically dairy, wheat, eggs, nuts, seafood, and in the South Indian context, spices act as potent mucosal irritants on an already inflamed, eosinophil-infiltrated esophagus.

The key point from Sleisenger & Fordtran's: "EoE manifests with reflux or vomiting, irritability, food refusal, early satiety... symptoms could be reproduced with the introduction of certain foods... Elimination of suspect foods for 6 to 10 weeks should lead to resolution and normalization of esophageal histology."

Why GERD treatment failed: EoE does NOT respond well to PPIs alone, and the esophageal sensitivity in EoE to chemical irritants (capsaicin in spices, fat-soluble irritants) is dramatically heightened.

2. Laryngopharyngeal Reflux (LPR) / Extraesophageal GERD

LPR is gastroesophageal reflux where the refluxate reaches the laryngopharynx, directly stimulating cough receptors in the larynx and upper trachea. Spicy and fatty foods both:

Reduce lower esophageal sphincter (LES) tone (fatty food especially)
Increase gastric acid and pepsin secretion (spices)
Trigger high-volume reflux that reaches the larynx

From Murray & Nadel's Respiratory Medicine: "A heightened cough reflex to capsaicin in GERD patients provides evidence for sensitization of this pathway... pepsin... proposed as stimulating cough... laryngeal symptoms may be present with dysphonia, hoarseness, frequent throat clearing, globus sensation."

The inadequate response to sodium bicarbonate + pantoprazole may be because: (a) the patient needed a longer PPI course (minimum 8-12 weeks at double dose), (b) non-acid (pepsin/liquid) reflux was not addressed, (c) dietary compliance was incomplete.

3. Esophageal Dysmotility / Achalasia (early/incomplete)

Achalasia causes failure of LES relaxation + aperistalsis. After fatty meals (which delay gastric emptying and increase esophageal distension), undigested food stagnates and is regurgitated - the "vomiting food particles" description fits well. Cough occurs due to aspiration of retained esophageal contents and/or esophageal-tracheal reflex. From Current Surgical Therapy: "The spectrum of manifestations includes regurgitation of food, retrosternal chest pain, and dysphagia." The fact that bland food is tolerated slightly better (less stimulating/smaller bolus effect) is consistent with early achalasia.

4. Food Protein-Induced Allergic Enteropathy / Spice Allergy with Esophageal Sensitization

Capsaicin (in chillies) and other spice compounds (piperine in pepper, gingerols, mustard oils) are known TRPV1 channel agonists. In a sensitized individual, even low-level spice exposure triggers a massive vagally-mediated cough and emetic reflex through sensitized esophageal/laryngeal receptors. This may overlap with EoE but can also be an independent food hypersensitivity reaction with a primarily neurogenic (rather than eosinophilic) mechanism. More common in the South Indian population given chronic dietary capsaicin exposure leading to TRPV1 desensitization followed by resensitization.

5. Esophageal Hypersensitivity / Functional Esophageal Disorder (Rome IV)

This is a diagnosis of exclusion. The esophageal mucosa may appear normal on endoscopy and biopsy, but visceral hypersensitivity - central and peripheral sensitization of the esophageal afferent pathways - causes disproportionate cough and emetic responses to normal stimuli (spice, fat). This fits the pattern of symptoms with bland food tolerance, and may follow a viral illness or period of reflux that resets the cough reflex threshold. The partial but incomplete response to any treatment is characteristic of central sensitization disorders.

Treatment of Top 3 Differentials

Treatment of #1: Eosinophilic Esophagitis (EoE)

Step 1 - Confirm the diagnosis first (mandatory):

Upper GI endoscopy with esophageal biopsies (minimum 4-6 biopsies from proximal and distal esophagus): look for >15 eosinophils/high-power field (x40)
Endoscopic findings: mucosal rings ("trachealization"/feline esophagus), linear furrows, whitish exudates, strictures

Step 2 - Dietary therapy (first-line, especially for young woman avoiding long-term steroids):

Empiric elimination diet: Start with the "6-food elimination diet" removing dairy, wheat, eggs, soy, nuts, seafood. In Kerala context, the main suspects are: milk/dairy, wheat (chapati/maida), egg, seafood (fish curry with heavy spice)
Maintain for 6-10 weeks, reassess with repeat endoscopy + biopsy
Then sequentially reintroduce foods to identify the trigger
Clinical symptoms should improve in 3-6 weeks even before histological normalization

Step 3 - Pharmacological:

Swallowed topical corticosteroids (not inhaled): Swallowed fluticasone (440-880 mcg/day, sprayed into mouth and swallowed, not inhaled) OR viscous budesonide (1 mg twice daily mixed with a thickening agent like sucralose/honey): achieves remission in 50-80% of patients
NOT systemic oral steroids for long-term use due to side effects
PPIs: useful if concurrent GERD is confirmed (not primary EoE treatment)
Avoid esophageal dilation until confirmed stricture present
Duration: minimum 8-12 weeks induction, then maintenance to prevent relapse (EoE is a chronic relapsing disease)

Practical Kerala note: The patient likely needs to identify whether coconut milk/oil (fat), tamarind, chilli, or mustard are triggers - these are dominant in Kerala cooking.

Prognosis of EoE:

EoE is a chronic, non-progressive, non-malignant disease
With appropriate dietary management, long-term remission is achievable in most patients
Without treatment, strictures and fibrosis develop over years (esophageal remodeling)
Quality of life is significantly improved with the correct diagnosis and treatment
No increased risk of malignancy
Requires long-term follow-up and maintenance therapy to prevent relapse

Treatment of #2: Laryngopharyngeal Reflux (LPR)

The key principle: LPR requires longer, higher-dose, and more comprehensive treatment than typical GERD. The 1-month course she received was inadequate.

Lifestyle measures (mandatory, not optional):

Avoid spicy food, fatty food, citrus, tomatoes, coffee, carbonated drinks, chocolate
Eat small meals; no food within 3-4 hours of lying down
Elevate head of bed by 30 degrees
Weight management (even if not obese, reducing abdominal pressure helps)
Avoid tight clothing around abdomen

Medical therapy:

PPI (pantoprazole 40 mg) twice daily (before breakfast AND before dinner) for minimum 3-6 months - the one-month once-daily course was grossly underdosed for LPR
Add alginate-based preparations (e.g., Gaviscon Advance/Sodium alginate) after meals and at bedtime - these form a raft over gastric contents and physically block reflux reaching the larynx
H2-blockers (famotidine 20 mg at bedtime) can be added for nocturnal acid breakthrough
Prokinetics (domperidone 10 mg before meals) to improve gastric emptying and reduce reflux volume - though evidence is modest
For capsaicin-triggered hypersensitivity: low-dose gabapentin or amitriptyline (neuromodulators) have emerging evidence for refractory LPR cough by damping the sensitized vagal reflex arc

Investigations before escalating:

24-hour dual pH impedance monitoring (gold standard) to document non-acid reflux
Laryngoscopy: look for posterior laryngeal erythema, arytenoid edema, cobblestoning
Upper GI endoscopy

Escalation if medical therapy fails:

Laparoscopic fundoplication (Nissen/Toupet) - last resort

Prognosis of LPR:

With sustained lifestyle modification + adequate-dose/duration PPI: 60-80% improve significantly
Inadequately treated LPR causes progressive laryngeal changes (contact ulcers, granulomas, dysphonia)
Some patients develop refractory cough hypersensitivity requiring neuromodulatory therapy
Overall prognosis is good if treated properly and consistently

Treatment of #3: Esophageal Dysmotility / Achalasia

Diagnosis confirmation first:

Barium swallow (modified): classic "bird's beak" sign at LES; dilated esophagus may contain food residue
Upper GI endoscopy: rules out malignancy/stricture; may show retained food, puckered LES
High-Resolution Esophageal Manometry (HRM): gold standard - elevated integrated relaxation pressure (IRP >15 mmHg), absent peristalsis (Type I), panesophageal pressurization (Type II), or spastic contractions (Type III)

Treatment (none is curative, all aim to reduce LES obstruction):

Botulinum toxin injection (endoscopic, into LES): rapid but temporary relief (6-12 months); appropriate first step in young patients to confirm response before definitive treatment; can be repeated
Pneumatic dilation (endoscopic): mechanical disruption of LES muscle fibers using a balloon (30-35 mm); 70-90% initial success; preferred non-surgical option; requires repeat dilations in ~50% over 5 years
Laparoscopic Heller Myotomy (LHM) with partial fundoplication: surgical division of LES muscle; 85-95% symptom relief; considered gold standard in young, fit patients; combined with anti-reflux procedure (Dor/Toupet) to prevent post-myotomy GERD
Peroral Endoscopic Myotomy (POEM): newer endoscopic technique; equivalent efficacy to surgery; higher post-procedure GERD rate; well suited for Type III achalasia
Medical temporizing (while awaiting definitive treatment):
- Calcium channel blockers (nifedipine 10-20 mg sublingually before meals) or nitrates (isosorbide dinitrate 5 mg sublingual) - reduce LES pressure; significant side effects limit use
- Small frequent bland meals; thorough chewing; avoid lying down after meals; warm liquids can help propel food

Prognosis of Achalasia:

Achalasia is progressive and non-curable - the underlying neurodegeneration is irreversible
Early treatment prevents complications (esophageal dilation, aspiration pneumonia, weight loss)
After myotomy/dilation, most patients have excellent quality of life for decades
Long-term risk: esophageal squamous cell carcinoma (~3% at 20 years, higher than general population) - requires surveillance endoscopy every 3 years after 10 years of disease
Without treatment: progressive dysphagia, malnutrition, recurrent aspiration

What This Patient Needs Urgently

She has been mismanaged with empirical treatment without any investigation. The next step must be:

Upper GI endoscopy with esophageal biopsies (priority #1) - will simultaneously assess for EoE, GERD esophagitis, achalasia features, and malignancy
High-resolution esophageal manometry - if endoscopy is non-diagnostic
Food and symptom diary - to systematically link specific foods to episodes
Referral to a gastroenterologist (not just pulmonologist) - this presentation is primarily a gastroenterology/esophagology problem, not a pulmonary one

A gastroenterologist in Trivandrum (Government Medical College or SCTIMST) would be the appropriate next referral.

References:

Sleisenger and Fordtran's Gastrointestinal and Liver Disease (EoE section) - diagnosis criteria, dietary management, topical steroid therapy
Murray & Nadel's Textbook of Respiratory Medicine - GERD-related cough mechanisms, capsaicin hypersensitivity, LPR
Current Surgical Therapy 14e - Achalasia: Eckardt scoring, HRM, treatment options
ACG Clinical Guideline: Diagnosis and Management of Eosinophilic Esophagitis (Dellon ES et al., Am J Gastroenterol 2025) [PMID: 39745304]
AGA Clinical Practice Update on Extraesophageal GERD (Chen JW et al., Clin Gastroenterol Hepatol 2023) [PMID: 37061897]

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