# Severe Hypernatremic Dehydration in an Exclusively Breastfed Neonate

**Authors:** Marta Figueiredo, Melissa Figueiredo, Filipa Vieira, Mónica Marçal, Madalena Tuna

PMC · DOI: 10.7759/cureus.102947 · Cureus · 2026-02-04

## TL;DR

A 16-day-old exclusively breastfed baby developed severe hypernatremic dehydration, highlighting the need for early diagnosis and careful treatment.

## Contribution

This case report emphasizes the clinical management of severe hypernatremic dehydration in an exclusively breastfed neonate.

## Key findings

- Severe hypernatremic dehydration occurred in an exclusively breastfed neonate.
- Management required careful fluid restoration and gradual electrolyte correction.
- Early diagnosis and awareness are crucial to prevent complications.

## Abstract

Neonatal hypernatremic dehydration is a serious condition associated with inadequate fluid intake, often due to insufficient lactation. In addition to the complications directly related to the condition itself, the re-establishment of plasma tonicity may also lead to serious consequences if done abruptly. Management involves careful fluid restoration and gradual correction of electrolyte imbalance. The increasing incidence of this clinical condition highlights the importance of raising awareness among parents and healthcare professionals for early diagnosis and prevention. We report a case of severe hypernatremic dehydration in a 16-day-old exclusively breastfed newborn, emphasizing its clinical management.

## Full-text entities

- **Genes:** CRP (C-reactive protein) [NCBI Gene 1401] {aka PTX1}
- **Diseases:** decreased bowel movements (MESH:D012778), hypovolemic shock (MESH:D012769), Hyperglycemia (MESH:D006943), irritability (MESH:D001523), lactation failure (MESH:D051437), water deficit (MESH:D000069578), cerebral edema (MESH:D001929), intracranial hemorrhage (MESH:D020300), obesity (MESH:D009765), azotemia (MESH:D053099), acute kidney injury (MESH:D058186), diarrhea (MESH:D003967), seizure (MESH:D012640), hearing impairment (MESH:D034381), hypernatremia (MESH:D006955), fever (MESH:D005334), vomiting (MESH:D014839), bradycardia (MESH:D001919), hypothermia (MESH:D007035), epilepsy (MESH:D004827), death (MESH:D003643), intellectual disability (MESH:D008607), brain injury (MESH:D001930), infections (MESH:D007239), hypoglycemia (MESH:D007003), lethargy (MESH:D053609), weight loss (MESH:D015431), Hypernatremic Dehydration (MESH:D003681), venous and arterial thrombosis (MESH:D020246), metabolic acidosis (MESH:D000138), dry mouth (MESH:D014987), mineralizing vasculopathy (MESH:C537337), liver failure (MESH:D017093), hyperbilirubinemia (MESH:D006932), lethargic (MESH:D004674), neurological sequelae (MESH:D009422), disseminated intravascular coagulation (MESH:D004211), chronic diseases (MESH:D002908)
- **Chemicals:** sodium chloride (MESH:D012965), phosphorus (MESH:D010758), water (MESH:D014867), pCO2 (-), potassium (MESH:D011188), Sodium (MESH:D012964), amino acids (MESH:D000596), urea (MESH:D014508), HCO3- (MESH:D001639), carbon dioxide (MESH:D002245), creatinine (MESH:D003404), dextrose (MESH:D005947), calcium (MESH:D002118)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

3 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12966938/full.md

## References

10 references — full list in the complete paper: https://tomesphere.com/paper/PMC12966938/full.md

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Source: https://tomesphere.com/paper/PMC12966938