Situation: A nurse trained in Integrated Management of Childhood Illness (IMCI) sees sick children at the under-five clinic of a Rural Health Unit (RHU). A 2-year-old has had diarrhea for 3 days with no blood in the stool. He has no general danger signs and is not lethargic. His eyes are sunken, he drinks eagerly when offered water, and his skin pinch goes back very slowly (longer than 2 seconds). How should the nurse classify his dehydration according to IMCI?

IMCI checks the severe row first: two or more of lethargic or unconscious, sunken eyes, not able to drink or drinking poorly, and skin pinch going back very slowly mean severe dehydration. This child has two of these signs, sunken eyes and a very slow skin pinch. Drinking eagerly is a sign of the yellow row, but the child is classified by the most severe row in which two signs are present.

IMCI dehydration classification: how the severe row overrides the yellow row

The Integrated Management of Childhood Illness (IMCI) algorithm for diarrhea uses a stepwise, color-coded classification. The nurse must always assess the pink (severe) row first, then the yellow (some dehydration) row, and finally the green (no dehydration) row. A child is classified into the most severe row in which two or more of that row’s signs are present.

For severe dehydration, the IMCI signs are: lethargic or unconscious, sunken eyes, not able to drink or drinking poorly, and skin pinch going back very slowly (longer than 2 seconds). This 2-year-old has sunken eyes and a skin pinch that goes back very slowly — that is two signs from the severe row. The fact that he drinks eagerly is a yellow-row sign, but it does not move him down to “some dehydration” because the severe row already has the required two signs. Watch out! A single yellow-row sign never cancels out two pink-row signs; classification follows the most severe row that meets the two-sign threshold.

The underlying physiology is straightforward. Sunken eyes reflect loss of fluid from the orbital connective tissue and reduced tissue turgor, while a very slow skin pinch indicates a marked reduction in interstitial fluid volume. When both are present together, the child has lost a clinically significant proportion of body water — enough to compromise perfusion and require urgent fluid replacement. The IMCI algorithm is designed so that even minimally trained health workers can recognize this pattern without laboratory support ^[3]. In a Kenyan validation study, the draft IMCI algorithm performed comparably to a fully trained pediatrician with laboratory and radiological support for identifying children needing urgent care ^[3]. This supports the reliability of the clinical signs used in the pink row.

The distinction between “some dehydration” and “severe dehydration” matters because treatment differs. Some dehydration is managed with oral rehydration solution (ORS) under observation, while severe dehydration requires intravenous fluid therapy and immediate referral or emergency care. Misclassifying a severely dehydrated child as “some dehydration” delays IV fluids and increases the risk of hypovolemic shock. A clinical audit in Sudan found that structured education improved healthcare providers’ knowledge of pediatric dehydration management, highlighting that correct classification is a skill that must be deliberately taught and maintained .

A comparison of the IMCI dehydration rows clarifies why this child falls into the pink classification:

Classification row	Key signs (two or more required)	This child
Severe dehydration (pink)	Lethargic or unconscious, sunken eyes, not able to drink or drinking poorly, skin pinch very slow (over 2 seconds)	Sunken eyes and very slow skin pinch present — meets criteria
Some dehydration (yellow)	Restless or irritable, sunken eyes, drinks eagerly, skin pinch slow (returns slowly but under 2 seconds)	Drinks eagerly is present, but skin pinch is very slow, not merely slow
No dehydration (green)	None of the above signs in sufficient number	Does not apply

The critical point is that “drinks eagerly” belongs to the yellow row, while “skin pinch goes back very slowly” belongs to the pink row. The child’s skin pinch is described as going back very slowly, longer than 2 seconds, which is the pink-row descriptor — not the yellow-row “slowly.” Combined with sunken eyes, this gives two pink-row signs. Key point! In IMCI, a child with two severe-row signs is classified as severe dehydration even if other signs suggest a milder category.

The Gorelick 10-point scale has been compared with the IMCI scale for identifying significant dehydration in South Indian children . While the Gorelick scale includes additional clinical indicators, the IMCI scale remains the standard used in many primary care settings because of its simplicity and acceptable diagnostic accuracy. The present case illustrates why the IMCI approach works: it prioritizes the most dangerous signs first, ensuring that a child with two indicators of severe dehydration is not undertreated. The nurse’s responsibility is to recognize that the pink row has been satisfied and to initiate emergency fluid management without delay.