In Nightmare, Francisco de Goya presents a chilling scene dominated by dark tones. The old woman, hunched over, carries several figures on her back, suggesting a heavy burden. The figures are ghostly and indistinct, adding to the unsettling atmosphere.

The background is shadowy, enhancing the feeling of dread and despair. The painting is executed in oil on canvas, a medium that allows for rich textures and deep colors. Goya's brushwork is loose yet deliberate, creating a sense of movement and urgency. The composition draws the viewer's eye to the old woman and her burden, emphasizing the theme of suffering.

The use of chiaroscuro highlights the figures against the dark background. Francisco de Goya was known for his explorations of human emotion and the darker aspects of life. Nightmare reflects his interest in the supernatural and the psychological struggles of individuals. This work is part of a series of paintings where Goya delves into themes of fear and anxiety.

Interestingly, it is believed that Goya was inspired by his own nightmares and visions, making this piece deeply personal.