'Red flag' symptoms suggesting disorders other than GOR
Symptoms and signs  | Possible diagnostic implications  | Suggested actions  | 
Gastrointestinal  | ||
Frequent, forceful (projectile) vomiting  | May suggest hypertrophic pyloric stenosis in infants up to 2 months old  | Paediatric surgery referral  | 
Bile-stained (green or yellow-green) vomit  | May suggest intestinal obstruction  | Paediatric surgery referral  | 
Haematemesis (blood in vomit) with the exception of swallowed blood, for example, following a nose bleed or ingested blood from a cracked nipple in some breast-fed infants  | May suggest an important and potentially serious bleed from the oesophagus, stomach or upper gut  | Specialist referral  | 
Onset of regurgitation and/or vomiting after 6 months old or persisting after 1 year old  | Late onset suggests a cause other than reflux, for example a urinary tract infection. Persistence suggests an alternative diagnosis  | Urine microbiology investigation Specialist referral  | 
Blood in stool 
  | May suggest a variety of conditions, including bacterial gastroenteritis, infant cows' milk protein allergy or an acute surgical condition  | Stool microbiology investigation Specialist referral  | 
Abdominal distension, tenderness or palpable mass  | May suggest intestinal obstruction or another acute surgical condition  | Paediatric surgery referral  | 
Chronic diarrhoea  | May suggest cows' milk protein allergy  | Specialist referral  | 
Systemic  | ||
Appearing unwell Fever  | May suggest infection  | Clinical assessment and urine microbiology investigation Specialist referral  | 
Dysuria  | May suggest urinary tract infection  | Clinical assessment and urine microbiology investigation Specialist referral  | 
Bulging fontanelle  | May suggest raised intracranial pressure, for example, due to meningitis  | Specialist referral  | 
Rapidly increasing head circumference (more than 1 cm per week) Persistent morning headache, and vomiting worse in the morning  | May suggest raised intracranial pressure, for example, due to hydrocephalus or a brain tumour  | Specialist referral  | 
Altered responsiveness, for example, lethargy or irritability  | May suggest an illness such as meningitis  | Specialist referral  | 
Infants and children with, or at high risk of, atopy  | may suggest cows' milk protein allergy  | Specialist referral  | 
Perform an urgent (same day) upper GI contrast study for infants with unexplained bile-stained vomiting. Explain to the parents and carers that this is needed to rule out serious disorders such as intestinal obstruction due to mid-gut volvulus.
Consider an upper GI contrast study for children and young people with a history of bile-stained vomiting, particularly if it is persistent or recurrent.
Offer an upper GI contrast study for children and young people with a history of GORD presenting with dysphagia.
Arrange an urgent specialist hospital assessment to take place on the same day for infants younger than 2 months with progressively worsening or forceful vomiting of feeds, to assess them for possible hypertrophic pyloric stenosis.
Reference:
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