The invention relates to an absorbent article (1) comprising: a temperature sensor (5), and at Least one temperature change material (6) arranged such that it is capable of affecting a temperature change due to a supply of excrement, and such that said temperature sensor (5) is capable of being responsive to said affected temperature change. The invention relates also to a system for detecting a supply of excrement into an absorbent article (1), said system comprising an absorbent article (1) according the invention being arranged to generate an output signal representative of the temperature, and a processing unit (8) adapted to process an output signal generated by the temperature sensor (5). The processing unit (8)is adapted to determine a change of temperature, wherein said change of temperature is affected by the temperature change material (6), and detect a supply of excrement into said absorbent article (1) based on said change of temperature, whereby the supply of excrement is associated with a change of temperature. Further, the invention relates to a method of detecting a supply of excrement into an absorbent article (1), wherein said absorbent article (1) is an absorbent article according to any one of claims 1-22, said method comprising the steps of determining (100) a change of temperature, wherein said change of temperature is affected by the temperature change material (6) and detecting (200) a supply of excrement based on said change of temperature. The invention relates also to a kit comprising an absorbent article and a temperature sensor, wherein said absorbent article comprises at least one temperature change material arranged such that it is capable of affecting a temperature change due to a supply of excrement, and such that said temperature sensor is capable of being responsive to said affected temperature change when arranged in contact with said absorbent article.Linvention concerne un article absorbant (1) comprenant : un capteur de tempéra
