Failure to thrive weight chart: what should you know?

Clinicians plot weight alongside age, length or height, and sometimes head circumference. They look at the child’s own pattern, changes between measurements, feeding history, activity, and general health. A single point can be affected by scales, clothing, hydration, or timing, so it does not establish a diagnosis by itself.

Bring any previous measurements and note what the child eats or drinks across a typical day, including portions, appetite, vomiting, diarrhoea, constipation, and difficulty chewing or swallowing. Record energy levels and developmental progress. A child health consultation can combine these details with an examination and a practical feeding plan.

Arrange prompt medical review if weight is falling, feeding has become persistently difficult, or the child is unusually sleepy, weak, or less responsive. Seek urgent help for breathing difficulty, repeated vomiting, signs of severe dehydration such as very little urine, or a child who cannot keep fluids down.

Ask which measurements matter for your child, whether the pattern suggests faltering growth, what feeding changes are appropriate, and when weight should be checked again. Ask which symptoms should trigger same-day advice.