No. 32: Mar-Apr 1984
This is a very rare psychosomatic condition. In the past 45 years, about 100 cases of false pregnancies in females have been reported, but only 3 in males. A fourth has now come to light. It is the story of a 40-year-old, married man, who wished to have another child but his wife didn't. Subsequently, the man's abdomen began to protrude and his weight increased by 20 pounds. Symptoms similar to those of morning sickness also developed. The condition eventually subsided as he and his wife "talked out" their disagreement. The man had a previous history of depression and schizophrenia.
(Evans, Dwight Landis; "Pseudocyesis in the Male," Journal of Nervous and Mental Disease, 172:37, 1984.)
Reference. An interesting allied subject is "male lactation." See BMF12 in our Catalog: Biological Anomalies: Mammals II. This book is described here.