Egon Schiele

"Austrian Egon Schiele conveys physical and psychological torment. In numerous drawings and watercolours, Schiele represents women in sexually explicit poses that emphasize the animal nature of the human body, and his self-portraits reveal deep ambivalence toward the sexual content of both his art and his life. In Self-Portrait Nude, the artist stares at the viewer with an anguished expression, his emaciated body stretched into an uncomfortable pose. The image of insanity." 

text taken from my art history book