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Human beings are the result of countless intricate biological processes that influence their journey from birth to death. While these processes generally proceed smoothly, there are times when they falter. This list highlights some of the most unusual and rare conditions that can affect both children and adults.
10. Epidermolysis
Epidermolysis, or the Butterfly Disease, is an extremely rare genetic disorder that causes the skin to detach at the slightest touch. Due to its fragile nature, individuals suffering from this condition often experience painful blisters and open sores. These wounds are prone to infection and may become filled with pus and mucus. Even small changes in temperature can result in severe skin damage.
Children affected by the Butterfly Disease often resemble burn victims due to their bodies' inability to produce collagen. As if this condition weren't already devastating, it doesn’t just affect the skin—it can also impact the mouth, esophagus, and stomach, preventing many sufferers from eating or functioning normally. This hereditary disorder affects approximately one in 50,000 newborns. Despite the obvious symptoms of epidermolysis, little is understood about the condition, and there is currently no cure.
9. Ectopia Cordis
Ectopia cordis, a rare birth defect affecting one in 100,000 babies, occurs when a baby's heart develops outside of the body. The most striking feature of this condition is the heart’s external position, making it highly vulnerable to risks and complications.
Regrettably, many affected by this condition have very short lifespans or are not born at all. However, there is a miraculous case of a man named Christopher Wall, who lived and functioned with the condition for 33 years. Most ectopia cordis cases can be detected before birth via ultrasound, although some go unnoticed. Sadly, there is no cure, and surgical options are impossible due to the heart's fragile placement.
8. Hydrocephalus
Translated as “water on the brain,” hydrocephalus is a condition where cerebrospinal fluid accumulates in the ventricles of the brain. With the increase of fluid, the pressure on the brain and skull is increased as well. This usually results in skull enlargement, mental retardation, seizures, and tunnel vision. There have been several treatments developed to decrease the amount of fluid in the brain, though there is still no way to cure it completely.
In India, an extreme case of hydrocephalus has been reported in a girl named Roona Begum, whose head has swollen to 94 centimeters (37 in) in circumference. Just for reference, the circumference of an average baby’s skull is about 35.5 centimeters (14 in). Her head got to the point where she could barely move, because she was carrying an extra five liters of fluid in her head.
She was being taken care of in a two-room hut in India by her 18-year-old father, who was making a little more than $2 a day. Her head had grown so large she was unable to see because her eyelids had stretched so far upwards. Thankfully, over $60,000 has since been raised for Roona to receive the necessary surgery to release the liquid in her head.
7. Uner Tan Syndrome
Uner Tan syndrome is a rare and relatively recent condition first documented in the Ulas family in Turkey. While some medical professionals question its validity, the symptoms observed in the family remain difficult to explain. The disorder is named after Uner Tan, an evolutionary biologist, who suggested it might have evolutionary roots. People with this syndrome tend to crawl on all fours, produce grunting sounds instead of speech, and suffer from significant cognitive impairments. It is believed that these individuals may actually be experiencing cerebellar ataxia, though their persistent quadrupedal movement doesn’t align with this condition’s typical symptoms.
A particularly unusual feature of Uner Tan syndrome is its apparent impact on entire families, with all members adapting remarkably well to walking on all fours. Four families in Turkey are currently known to be affected by the disorder, and ongoing research is being conducted to understand it further. A 2006 BBC documentary titled The Family That Walks on All Fours was produced to highlight their story for the public.
6. Lesch-Nyhan Syndrome
Lesch-Nyhan syndrome itself may not seem particularly striking, but the behaviors it induces in affected individuals make it a fascinating condition. This hereditary disorder, which currently has no cure, is marked by a dangerous accumulation of uric acid in bodily fluids. This excess uric acid results in gout, impaired muscle coordination, and kidney issues. People with Lesch-Nyhan syndrome also experience motor disturbances that resemble those of individuals with Huntington’s disease.
The most unusual and alarming symptom of this syndrome is the uncontrollable tendency to self-mutilate. While not all individuals with Lesch-Nyhan syndrome exhibit this behavior, it is common and can range from head banging to severe nail, finger, and lip biting. In some cases, the self-harm becomes so severe that nails or teeth must be removed to prevent further injury.
People affected by Lesch-Nyhan Syndrome have also been known to engage in extreme self-injury, such as gouging their own eyes or scratching and hitting their faces. Fortunately, this rare disorder only impacts about 1 in every 380,000 live births. With the right treatment, restraint, and precautions, the condition can generally be managed effectively.
5. Hypohidrotic Ectodermal Dysplasia
Hypohidrotic ectodermal dysplasia, also known as the vampire disorder, is a condition that often gives those affected a striking appearance due to their pointed teeth, reminiscent of the mythical creatures in horror stories. The disorder can also impact hair, skin, and nails. In severe cases, individuals with HED have slender, pale physiques, dark circles around their eyes, missing or pointed teeth, hair loss, and visible signs of premature aging.
People living with HED must carefully monitor their body temperature, avoiding exposure to sunlight and heat for extended periods due to their absence of sweat glands. This condition is the most common form of ectodermal dysplasia, affecting about 1 in every 17,000 individuals, including actor Michael Berryman.
4. Lamellar Ichthyosis
Lamellar ichthyosis is a rare genetic disorder that causes infants to shed their skin in a manner similar to reptiles. At birth, babies with this condition are covered in a shiny, smooth membrane known as a collodion membrane, which they eventually shed to reveal their actual skin, which is scaly and cracked. Due to the lack of a protective outer layer and functioning sweat glands, these babies are at high risk of infection, dehydration, and hypothermia.
The scales, which resemble those found on fish, typically become more pronounced as the child grows, often concentrating around areas such as the armpits and groin. Although the condition doesn’t seem to cause physical pain, the bright red, scaly skin can have lasting psychological effects on the child. The disorder can also lead to ectropion, which is the outward turning of the lips and eyelids.
Though Lamellar ichthyosis is rare, an even rarer variation called bathing suit ichthyosis has been reported in South Africa, with fewer than 20 known cases. In this form of the disorder, the scaly lesions appear on larger areas of the body such as the stomach, back, and head, rather than on softer joints like the armpits, genitals, or elbows. There is no cure for this hereditary condition, and ongoing research is focused on finding effective treatments.
3. Pseudomamma
Pseudomamma refers to the development of breast-like tissue in places other than the breast. This phenomenon typically appears along the milk line or the abdomen. In rare instances, however, pseudomamma can form in unusual areas of the body, such as the face. A particularly strange case recently emerged when a 22-year-old woman visited her doctor with a peculiar growth on the underside of her foot. Upon further investigation, the doctors discovered the growth to be a nipple, complete with an areola, hair, and sweat and oil glands.
While most growths do not pose any harm to their hosts, they are often removed for cosmetic reasons. Not all cases of pseudomamma are congenital; some may develop spontaneously over the course of one's life.
2. Polymelia
Polymelia is a rare condition where individuals are born with an abnormal number of limbs. In some cases, these extra limbs may be functional, while in others, they are non-functional. Polymelia can occur for various reasons, such as improper limb separation during development or the reabsorption of a conjoined twin. While an extra arm or leg may not seem particularly alarming, the more extreme instances of polymelia are what make this condition so uniquely fascinating.
In Pakistan, there was a case of a baby born with six legs, caused by a parasitic twin. Polymelia can result in an abnormal number of limbs, including in rare cases, extra genitals. This condition can be quite burdensome for those affected. Surgical procedures are available to remove the extra limbs, although some individuals find their additional extremities, particularly extra fingers, to be useful. Polymelia has also been observed in various animal species.
1. Harlequin Ichthyosis
Harlequin ichthyosis, the most severe form of ichthyosis, occurs when the skin's keratin layer hardens and cracks. Many of the infant's limbs may be severely contracted or missing entirely, and the same can happen to the ears, nose, eyes, and penis. Due to the large, cracked skin scales, the baby’s ability to move is greatly restricted. Sadly, the prognosis for those diagnosed with harlequin ichthyosis is often grim, due to the high risk of infections that arise in the skin fissures.
If infants with harlequin ichthyosis don’t succumb to infections or the inability to move, they often face death due to dehydration or respiratory failure. However, in rare instances, some individuals survive past infancy, which is a significant achievement in itself. Hunter Steinitz, a young woman with this disease, has reached the remarkable age of 18. Despite her survival, each day is a constant challenge. She must apply oils to her skin regularly to prevent further cracking, and unfortunately, there is no cure for this inherited condition.
