▲Imagine that you eat a nice bowl of pasta for lunch, and don't have an alcoholic beverage with it.

▲After the meal, however, you're hammered. This is called gut fermentation syndrome, or auto-brewery syndrome.

▲

The intoxication is caused by a kind of gut yeast that turns sugar into ethanol through fermentation.

▲The rare syndrome is caused by an excessive presence of a certain species of yeast, one that is commonly used to make beer and bread.

▲Treatment of this syndrome includes anti-fungal or antibiotic therapy, a specific diet with controlled carbohydrates, as well as probiotics.

▲Have you ever seen someone and felt like you recognized them, but in reality you've never actually met them before?

▲For some people this is a daily condition, and it’s called Fregoli delusion. People with this syndrome believe that everyone they meet is someone they know, but in disguise.

▲

It’s a misidentification delusion that allows a person to falsely see someone as psychologically identical to someone else, even though they’re physically different.

▲

The syndrome may be related to a brain lesion, and is often regarded as dangerous because of its paranoid nature. The delusional person often believes whoever is in disguise is coming after them.

▲Fregoli delusion is a type of neuropsychiatric disorder that should be treated with the help of specialized physicians.

▲

Usually when we think of something biologically harmful in our bodies, it’s separate from ourselves. With Lesch-Nyhan syndrome, you become the danger to yourself.

▲The condition is caused by a mutation of the X chromosome, and causes neurological and behavioral abnormalities, as well as the overproduction of uric acid in the body. A distinguishing characteristic is self-harm.

▲The disease is hereditary, it occurs almost exclusively in males, and self-harm is apparent in the majority of affected males.

▲

It typically begins as a toddler, with biting of the lips and tongue, but can quickly progress to finger biting and head banging. There are also other symptoms like inflammatory arthritis, kidney stones, and moderate cognitive disabilities.

▲

There is no cure for this syndrome, but medication can help ease the symptoms.

▲Visiting a museum or an art gallery is an enriching, peaceful experience, right? Well, not for everyone.

▲Some people feel dizzy, faint, and experience an increased heart rate and even hallucinations just from being exposed to so many objects of great beauty.

▲The syndrome has long been debated by psychologists, but the apparent effects on some people have been severe enough to warrant medical attention.

▲It is also known as Florence syndrome because of the number of cases reported by people who have visited the art-filled city.

▲Though it can't be defined as a psychiatric disorder, there is evidence that the same cerebral areas involved in emotional responses are activated when exposed to art. Treatment includes rest, and perhaps psychological counseling.

▲

Zombies are typically frightening to people because of their relationship to their bodies, and their complete lack of care for normal human values. What if someone told you there’s a condition very similar to that?

▲

Cotard delusion, also known as walking corpse syndrome, is marked by the delusional belief that you or your body parts are dead, dying, or don't exist.

▲

People who suffer from this rare condition also usually suffer from depression and other severe mental illnesses.

▲People with this syndrome feel as if they’re dead or rotting away, and in some cases they may even feel like they’ve never existed. This feeling can be about their entire body, or specific limbs, or occasionally their soul.

▲When you see an array of clay, cloth, and chalk, are you appetized? If you have pica, you may have a strong desire to eat these non-nutritive substances.

▲This disorder, also known as allotriophagy, can include consuming non-nutritive substances like ice, hair, paper, drywall, paint chips, stones, soil, wood, coal, glass, chalk, and more.

▲

It's most commonly seen in pregnant women, small children, and people with developmental disabilities.

▲

Pica can form as a type of comfort in the face of things like emotional trauma, maternal deprivation, family issues, or parental neglect.

▲

Though the condition has no cure, a healthy mix of psychiatric therapy and medication can help.

▲

Treatment is very specific for each case and should be prescribed by a doctor.

▲

The human body is a complex thing that we haven't quite totally figured out yet, and sometimes the reality of medical conditions can be stranger than fiction. For example, you probably think that no one could actually ever become a zombie, or that someone would be lying if they became intoxicated after dinner but claimed they didn't touch a drink. But these are the fruit of rare syndromes that make people behave in almost unbelievable ways.

Click through to see some truly astounding medical conditions with strange symptoms.