I-Human Case Study: Grady Turner, 18 Months Old –
Reason for Encounter: Cough
1. Introduction: The Significance of a Pediatric Cough
Cough is one of the most common reasons for pediatric outpatient visits and a frequent
source of parental anxiety. For an 18-month-old, the differential diagnosis is exceptionally
broad, ranging from self-limiting viral illnesses to life-threatening emergencies. This case
study of Grady Turner challenges the learner to move beyond the simple symptom of
"cough" to uncover the underlying etiology through a systematic, age-appropriate approach.
The key is recognizing that in a toddler, the history is obtained from the caregiver, and the
physical exam relies heavily on observation and interaction.
2. Phase I: Information Gathering – The History of Present Illness
(HPI)
The initial data collection is paramount. The learner must efficiently gather a detailed history
from Grady's parent or guardian. The mnemonic OLD CARTS (Onset, Location, Duration,
Character, Aggravating/Alleviating factors, Radiation, Timing, Severity) is adapted for a
pediatric cough.
Onset and Duration: Did the cough start suddenly (suggesting a foreign body
aspiration) or gradually (suggesting an infectious process)? Is it acute (<2 weeks),
subacute (2-4 weeks), or chronic (>4 weeks)? An 18-month-old is a "oral explorer,"
making foreign body aspiration a critical consideration.
Character of Cough: This is a crucial differentiator.
o Barking/Seal-like: Suggests croup (laryngotracheobronchitis), often worse at
night.
o Whooping: Paroxysmal cough followed by an inspiratory "whoop," suggestive
of pertussis (whooping cough), though may be less classic in a partially
immunized child.
o Wet/Productive: Indicates lower respiratory tract involvement like
pneumonia or bronchitis. In a toddler, "productive" often means you can hear
the mucus, as they swallow it.
o Dry/Hacking: Can be viral upper respiratory infection (URI), post-nasal drip, or
early-stage atypical pneumonia.
o Staccato: A short, staccato cough in an infant can be classic for Chlamydia
trachomatispneumonia, though less common in an 18-month-old.
o Nocturnal: Cough that worsens at night can be due to post-nasal drip
(sinusitis/allergies), asthma, or gastroesophageal reflux disease (GERD).
Associated Symptoms: This helps localize the source.
o Fever: Suggests an infectious etiology (viral URI, influenza, pneumonia, otitis
media).
, o Rhinorrhea: Common with viral URIs, sinusitis, or allergies.
o Wheezing or Grunting: Wheezing suggests lower airway obstruction (asthma,
bronchiolitis, foreign body). Grunting is a sign of respiratory distress, often
seen in pneumonia.
o Vomiting: Post-tussive emesis is common in young children with significant
coughing fits (pertussis, asthma, or forceful coughing from any cause).
o Ill Appearance / Lethargy: A key indicator of severity. A child who is playful
and interactive is less concerning than one who is listless or toxic-appearing.
3. Phase II: The Review of Systems & Past Medical History
Review of Systems: The learner must ask about:
o HEENT: Ear tugging (otitis media), purulent nasal discharge (sinusitis), red
eyes (conjunctivitis can be part of adenovirus or measles).
o Respiratory: Apnea (especially concerning for pertussis or RSV), tachypnea,
retractions.
o Gastrointestinal: Poor feeding, drooling (retropharyngeal abscess or
epiglottitis), vomiting, diarrhea (viral illness).
o Constitutional: Weight loss or failure to thrive (suggests chronic illness like
cystic fibrosis or immunodeficiency).
Past Medical History:
o Birth History: Prematurity (increases risk for bronchopulmonary dysplasia
and severe RSV), meconium aspiration.
o Immunization Status: Is Grady up-to-date on DTaP (diphtheria, tetanus,
pertussis), Hib, PCV13, MMR, and influenza? This is critical for ruling out
vaccine-preventable illnesses.
o Developmental Milestones: Any delays? This can hint at underlying
neuromuscular conditions that predispose to aspiration.
o Past Illnesses: History of reactive airway disease, eczema (atopic triad), or
previous episodes of croup.
o Medications: Has anything been tried? Over-the-counter cough and cold
medicines are not recommended for children under 6 years due to lack of
efficacy and potential side effects.
Family History: Asthma, atopy, or cystic fibrosis in the family.
Social History: This is vital. Does the child attend daycare? (Exposure to viral
illnesses). Is there a smoker in the home? (Environmental tobacco smoke is a major
irritant and risk factor for respiratory illness). Any recent travel or sick contacts?
Reason for Encounter: Cough
1. Introduction: The Significance of a Pediatric Cough
Cough is one of the most common reasons for pediatric outpatient visits and a frequent
source of parental anxiety. For an 18-month-old, the differential diagnosis is exceptionally
broad, ranging from self-limiting viral illnesses to life-threatening emergencies. This case
study of Grady Turner challenges the learner to move beyond the simple symptom of
"cough" to uncover the underlying etiology through a systematic, age-appropriate approach.
The key is recognizing that in a toddler, the history is obtained from the caregiver, and the
physical exam relies heavily on observation and interaction.
2. Phase I: Information Gathering – The History of Present Illness
(HPI)
The initial data collection is paramount. The learner must efficiently gather a detailed history
from Grady's parent or guardian. The mnemonic OLD CARTS (Onset, Location, Duration,
Character, Aggravating/Alleviating factors, Radiation, Timing, Severity) is adapted for a
pediatric cough.
Onset and Duration: Did the cough start suddenly (suggesting a foreign body
aspiration) or gradually (suggesting an infectious process)? Is it acute (<2 weeks),
subacute (2-4 weeks), or chronic (>4 weeks)? An 18-month-old is a "oral explorer,"
making foreign body aspiration a critical consideration.
Character of Cough: This is a crucial differentiator.
o Barking/Seal-like: Suggests croup (laryngotracheobronchitis), often worse at
night.
o Whooping: Paroxysmal cough followed by an inspiratory "whoop," suggestive
of pertussis (whooping cough), though may be less classic in a partially
immunized child.
o Wet/Productive: Indicates lower respiratory tract involvement like
pneumonia or bronchitis. In a toddler, "productive" often means you can hear
the mucus, as they swallow it.
o Dry/Hacking: Can be viral upper respiratory infection (URI), post-nasal drip, or
early-stage atypical pneumonia.
o Staccato: A short, staccato cough in an infant can be classic for Chlamydia
trachomatispneumonia, though less common in an 18-month-old.
o Nocturnal: Cough that worsens at night can be due to post-nasal drip
(sinusitis/allergies), asthma, or gastroesophageal reflux disease (GERD).
Associated Symptoms: This helps localize the source.
o Fever: Suggests an infectious etiology (viral URI, influenza, pneumonia, otitis
media).
, o Rhinorrhea: Common with viral URIs, sinusitis, or allergies.
o Wheezing or Grunting: Wheezing suggests lower airway obstruction (asthma,
bronchiolitis, foreign body). Grunting is a sign of respiratory distress, often
seen in pneumonia.
o Vomiting: Post-tussive emesis is common in young children with significant
coughing fits (pertussis, asthma, or forceful coughing from any cause).
o Ill Appearance / Lethargy: A key indicator of severity. A child who is playful
and interactive is less concerning than one who is listless or toxic-appearing.
3. Phase II: The Review of Systems & Past Medical History
Review of Systems: The learner must ask about:
o HEENT: Ear tugging (otitis media), purulent nasal discharge (sinusitis), red
eyes (conjunctivitis can be part of adenovirus or measles).
o Respiratory: Apnea (especially concerning for pertussis or RSV), tachypnea,
retractions.
o Gastrointestinal: Poor feeding, drooling (retropharyngeal abscess or
epiglottitis), vomiting, diarrhea (viral illness).
o Constitutional: Weight loss or failure to thrive (suggests chronic illness like
cystic fibrosis or immunodeficiency).
Past Medical History:
o Birth History: Prematurity (increases risk for bronchopulmonary dysplasia
and severe RSV), meconium aspiration.
o Immunization Status: Is Grady up-to-date on DTaP (diphtheria, tetanus,
pertussis), Hib, PCV13, MMR, and influenza? This is critical for ruling out
vaccine-preventable illnesses.
o Developmental Milestones: Any delays? This can hint at underlying
neuromuscular conditions that predispose to aspiration.
o Past Illnesses: History of reactive airway disease, eczema (atopic triad), or
previous episodes of croup.
o Medications: Has anything been tried? Over-the-counter cough and cold
medicines are not recommended for children under 6 years due to lack of
efficacy and potential side effects.
Family History: Asthma, atopy, or cystic fibrosis in the family.
Social History: This is vital. Does the child attend daycare? (Exposure to viral
illnesses). Is there a smoker in the home? (Environmental tobacco smoke is a major
irritant and risk factor for respiratory illness). Any recent travel or sick contacts?
