From involuntary natural drunkenness to a condition called "Exploding Head Syndrome," these are some of the most unusual disorders in the world.Image Source: Flickr Our brains and bodies are composed of an incredibly complex series of networks and systems, which naturally means that the list of things that can go awry within them is seemingly endless. Here are five disorders of the brain and body that you won’t believe even exist.

Iconic Images Of The 1980s: Tank Man, 1989 The most iconic image of the Tiananmen Square massacre, this picture depicts the important “unknown rebel” standing in front of the tanks that threatened a peaceful protest in China. Jeff Widener snapped this image. Tear Down This Wall, 1987 Speaking in front of the Brandenburg Gate in 1987, this image captures President Reagan making his powerful speech demanding Mikhail Gorbachev to tear down the Berlin Wall.

Also known as "Doña Marina," La Malinche advised Hernán Cortés to victory over the Aztecs — but perhaps she had little choice in the matter.Wikimedia CommonsLa Malinche became a trusted liaison to the Spanish conquistadors in the 16th century. She also went by “Malintzin” or “Doña Marina.” La Malinche was a native Mesoamerican woman of a Nahua tribe who became a trusted adviser and translator to Spanish conquistador Hernán Cortés. Her guidance proved instrumental in his takeover of the Aztec empire and by some accounts, she was also Cortés’s lover and mother of his child.

Known to this day for his recording of "Hallelujah," Jeff Buckley died at just 30 years old when he waded into the Mississippi and drowned on May 29, 1997.David Tonge/Getty ImagesJeff Buckley in Atlanta in 1994 — the year he released his debut album Grace. No one witnessed Jeff Buckley’s death. On May 29, 1997, in Memphis, Tennessee, the singer who is now famous for his rendition of Leonard Cohen’s “Hallelujah,” waded fully clothed into a channel of the Mississippi River.

From 180 to 192 C.E., Emperor Commodus ruled ancient Rome with an insatiable lust for power that brought an end to the fabled Pax Romana.Wikimedia CommonsA bust of Roman Emperor Commodus, styled as if he were a reincarnation of Hercules, which is precisely what he believed himself to be. The long line of ancient Roman emperors is marked by a strange pattern: Almost every exceptionally brilliant emperor was succeeded by an exceptionally mad one.

For decades, countless people have claimed that the "real" Paul McCartney died in a car accident in 1966 and was replaced with a lookalike.Slide The Beatles’ White Album out of its case. Turn on your record player. Put on the second-to-last track, “Revolution 9,” and play it backward. You should hear an otherworldly voice moaning, “Turn me on, dead man.” In 1969, this was enough to convince Beatles fans: Paul is dead.

In 1969, NASA relied on software engineer Margaret Hamilton to safely land the Apollo 11 astronauts on the lunar surface — and to bring them back home.Warning messages flashed on the screen at Mission Control on July 20, 1969. As the Apollo 11 lunar module — designated Eagle — descended toward the Moon’s surface, NASA had to decide whether to call off the historic mission. “With only minutes to spare,” software engineer Margaret Hamilton recalled, “the decision was made to go for the landing.

The discovery of the USS Indianapolis wreck comes decades after the ship sank, leaving 900 men to die in shark-infested waters.Wikimedia CommonsThe USS Indianapolis near California’s Mare Island Naval Shipyard on July 10, 1945, 20 days before it was sunk. Researchers have finally discovered the USS Indianapolis wreck, the remains of the World War II vessel that delivered the components of the Hiroshima bomb just before being sunk by Japanese torpedoes, leaving hundreds of its crew to die of exposure, dehydration, and shark attacks.

What happened on this day in history: Robert E. Lee surrenders to Ulysses S. Grant at Appomattox, Baghdad falls to U.S. forces, and more.1835: King Leopold II Of Belgium Is Born King Leopold II is born in Brussels, Belgium. Leopold II is most known for his extreme brutality in Belgium’s Congo Free State. Under his leadership, Leopold turned the Congo was turned into a playground for his economic interests. He sent mercenaries to enforce strict production quotes across the country and harshly punished anyone who stepped out of line.

What happened on this day in history: The Louvre Museum opens in Paris in 1793, "Son of Sam" killer David Berkowitz is arrested in 1977, and more historical events from August 10th.1628: The Warship Vasa Sinks The Swedish warship Vasa sinks less than a mile into her maiden voyage. Heralded as a paragon of modern engineering, the 226-foot ship had the capacity to carry 64 heavy cannons. However, within 20 minutes of launching, the overburdened ship tipped and sank in front of the thousands of spectators who had gathered to watch her depart from Stockholm.