Low Birth Weight

A newborn weighing less than 2.5 kg (5.5 lbs) at birth, which can result from being born prematurely, from restricted growth in the womb, or both. Low birth weight babies often need closer monitoring for feeding, temperature regulation, blood sugar, and infection in the early weeks of life. The most common causes include: Premature birth; intrauterine growth restriction; maternal malnutrition; maternal hypertension or preeclampsia.

Low Birth Weight becomes an emergency when it is unusually severe, sudden in onset, accompanied by other serious symptoms (chest pain, difficulty breathing, fainting), or occurs in vulnerable individuals such as infants, the elderly, or people with serious chronic conditions.

Diagnosis of Low Birth Weight begins with a detailed medical history and physical examination of the whole body (newborn). Your doctor may order blood tests, urine analysis, imaging studies (X-ray, ultrasound, MRI), or refer you to a specialist depending on suspected causes. Early diagnosis leads to faster, more effective treatment.

Mild cases of Low Birth Weight can often be managed with self-care: Keep the baby warm using skin-to-skin (kangaroo) care; feed frequently to support growth; and maintain a clean environment to reduce infection risk. These babies need structured medical follow-up alongside home care. However, if symptoms are severe, persistent, or worsening, always seek medical attention rather than relying solely on home remedies.

Low Birth Weight is typically classified as chronic. Acute forms usually resolve within a few days to weeks with appropriate care. Chronic or recurrent low birth weight may persist for months and requires longer-term management by a healthcare professional.

You should see a doctor if: Low birth weight babies require close paediatric follow-up from birth; with urgent review if the baby shows poor feeding; low body temperature. Early evaluation by a healthcare professional ensures an accurate diagnosis and prevents complications.