Although patients suffering from peptic ulcer do not show any apparent inhibitions in their genital behaviour, their sexual object is generally someone who frustrates them genitally. The conflict with this frustrating person antedates the appearance of their ulcer. Owing to their conflicts these patients suffer a harmful oral-digestive regression of their genitality. This regression results in intensification of their cruel superegos, especially in their maternal aspects. In the unconscious there is a reactivation of the mental representations of a mother who sucks, bites, and digests them from within and also forces them into harmful alimentary behaviour, such as eating harmful food, depriving themselves of good food, and cathecting food with bad psychic contents. This psychic constellation brings on various functional and organic disorders in the digestive tract of these patients, finally producing ulcers. Owing to this genesis of ulcers, the sole etiological and most efficient treatment for peptic ulcer patients is prolonged psycho-analysis.