In The Sick Child, Jean-François Millet portrays a young child lying in bed, appearing frail and unwell. The color palette is muted, dominated by soft browns and grays, which enhances the somber mood of the scene. The child's face is pale, and their expression conveys a sense of vulnerability and suffering.

Surrounding the child are simple, rustic elements that suggest a humble home environment. The painting is executed in oil on canvas, showcasing Millet's characteristic attention to detail and texture. The brushwork is loose yet deliberate, allowing for a sense of realism that draws the viewer into the child's plight. The dimensions are approximately 60 x 80 cm, making it a medium-sized work that invites close inspection.

The composition is intimate, focusing on the child and their immediate surroundings. Jean-François Millet was known for his depictions of rural life and the struggles of the working class. The Sick Child reflects his empathy for the vulnerable, showcasing the harsh realities faced by families during the 19th century. Interestingly, this painting was part of a series of works that addressed themes of illness and childhood, highlighting Millet's deep concern for social issues.

This work remains a significant example of Realism, capturing both the physical and emotional aspects of suffering.