1942, signs were evident that progressive syphilitic paralysis (Tabes dorsalis) was occurring. Himmler advised Kersten that Morell (who in the 1930s claimed to be a specialist venereologist) was in charge of Hitler's treatment, and that it was a state secret. The book also relates how Kersten learned from Himmler's secretary, Rudolf Brandt, that at that time, probably the only other people privy to the report's information were Nazi Party chairman Martin Bormann and Hermann Göring, the head of the Luftwaffe. Monorchism It has been alleged that Hitler had monorchism, the medical condition of having only one testicle. In 2008, a British newspaper reported that in 1916, a German doctor named Johan Jambor had encountered an injured Hitler during the Battle of the Somme. Jambor allegedly asserted that Hitler—who is known to have suffered a groin injury in the battle—had in fact lost a testicle. Jambor had supposedly described the dictator's condition to a priest, who later wrote down what he had been told. Soviet doctor Lev Bezymensky, allegedly involved in the Soviet autopsy, stated in a 1967 book that Hitler's left testicle was missing. Bezymensky later admitted that the claim was falsified. Hitler was routinely examined by many doctors throughout his childhood, military service and later political career, and no clinical mention of any such condition has ever been discovered. Eduard Bloch, Hitler’s childhood doctor, told U.S. interrogators in 1943 that Hitler's genitals were in fact "completely normal". Huntington's disease It has been speculated that Hitler had Huntington's disease. When many of the physical symptoms shown in newsreels during his later life – his hand tremor and shuffling gait – are coupled with his alleged mental and psychological deterioration, they may also point toward Huntington's. This is only conjecture, since a definitive diagnosis would require DNA testing. Although Huntington's Disease was known and considered a hereditary disease during the time period, even appearing in state papers on the sterilization list, it is not known if Hitler knew of this condition. Parkinson's disease It has also been speculated Hitler had Parkinson's disease. Newsreels of Hitler show he had tremors in his left hand and a shuffling walk (also a symptom of tertiary syphilis, see above) which began before the war and continued to worsen until the end of his life. Morell treated Hitler with a drug agent that was commonly used in 1945, although Morell is viewed as an incompetent doctor