20 Most Bizarre Congenital Defects/Abnormalities

Some peculiar abnormalities found here.

Congenital disorder or malformation is a birth defect. It is a result of genetic abnormalities, the intrauterine (uterus) environment, errors of morphogenesis, a chromosomal abnormality, or a complex mix and unknown factors.

Here’s a list of some of the most unusual birth defects.


(Photo courtesy of Indian Society of Pedodontics and Preventive Dentistry)

Aglossia is the absence of tongue at birth. This tongue anomaly is frequently found in persons who have other congenital or developmental defects particularly limb and other cranio-facial defects.


(Photo courtesy of Wikipedia)

Albinism is a congenital absence of normal pigmentation. It is characterized by partial or total lack of melanin pigment in the eyes, skin and hair. People who have this condition have visual difficulties like hypersensitivity to bright light and glare and many others.


Anencephaly is the absence of brain and spinal chord, a congenital defect. There is no cure or standard treatment for anencephaly and the prognosis for affected individuals is poor. Most anencephalic babies do not survive birth.


(Photo courtesy of Wikipedia)

Aniridia is the absence of the iris at birth. This usually occurs in both eyes. It is associated with poor development of the retina at the back of the eye preventing normal vision development.


(Photo courtesy of

Apodal is the congenital condition of having no feet.


(Photo courtesy of Visindavefurinn)

Brachydactylia is an abnormal condition of shortness of fingers. The picture above shows a child fingers and an adult with brachydactylia.

Cleft Foot and Hand

(Photo courtesy of Indian Pediatrics)

Cleft foot and hand also known as split or lobster foot and hand or partial adactyly is a rare inherited anomaly in which a single cleft extends promixally into the foot/hand. It usually occurs in conjunction with clawing of the hand

Club foot

(Photo courtesy of Wikipedia)

Club foot is a congenital foot deformity. The foot is twisted in (inverted) and down. There is no treatment that’s why persons afflicted often appear to walk on their ankles, or on the sides of their feet.


(Photo courtesy of Wikipedia)

Heterochromia (also known as a heterochromia iridis or heterochromia iridium) is an ocular condition in which one iris is a different color from the other iris. The subject on the photo above has a brown and hazel eye.


(Photo courtesy of UNSW Embryology)

Polydatyly is the presence of additional toes or fingers also called polydactylia or polydactylism. The condition is often treated surgically in the infant.


Syndactyly is the fusion of fingers or toes which may be single or multiple and may affect: skin only, skin and soft tissues or skin, soft tissues and bone.


Adermia is the absence of skin, congenital or acquired


Aglossostomia is the absence of a tongue or mouth at birth


Agonad is an individual without sex gland (testes or ovary).


Anonychia is a rare birth malformation characterized by absence of nails.


Atelocephalus is a condition of having an incomplete head.


Athymia is a condition of a person without emotion or feelings due to the congenital absence of the thymus gland


Chromatelopsia is a condition of color-blindness and the opposite of chromatopsia, a visual defect in which colorless objects appear to be tinged with color.

Darwinian ear

Darwinian ear is a congenital deformity of the helix of the ear.

It is a sad fact that thousands are afflicted by these birth defects. Fortunately, some of these malformations can be corrected medically but unfortunate for others because many of these congenital disorders present no medical solution.

For more bizarre conditions and diseases and other related articles :

Common and Rare Birth Defects or Congenital Disorders and their Causes

Bizarre Mental Disorders and Conditions

The Most Bizarre Sexual Disorders

Bizarre Deadly Diseases Transmitted by Animals to Humans

Deformities Caused by Bizarre Diseases or Physical Anomalies

Fight Colon/Rectum  Cancer  and Diabetes with High Fiber Bread Fruits and Vegetables

13-Bizarre Killer Diseases Transmitted by Animals to Humans

Top Ten Killer Cancers

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  1. Very sad, indeed. I had never heard of some of these. Thank you for sharing.

  2. I found the pictures very sad and tormenting. Poor souls!

    The only one which didn’t seem too bad was the one affected with differently coloured irisis

  3. Nobert, you are Mr Noberts Believe it or not. I usually see something like this on TV or Foxtel but you bring it to us with visuals and true facts.
    You are really unbelievable and unique, you deserve much more than this.
    Your articles are real eye catchers. Keep up the good work.

  4. Disturbing photos indeed, but informative.

  5. Interesting and informative, keep up the good work.

  6. Good job, Nobert,

    You never fail to amaze me. Well written, interesting and informative article. In my line of work I have seen some of these.

  7. It’s very rare for club foot not to be treated. For decades it has been treated with surgery and is now more often treated with long term splinting. It tends to only be in third world countries where some people aren’t treated.

  8. I have syndactyly on the second and third toe on each foot, its not that bad, if anything it’s entertaining to show people and watch their reactions, also it is a dominant genetic trait coming from my mother’s side of the family.

  9. My Godson has club feet and had casts on for a few weeks and will gradually decrease the amount of time he wears braces throughout the day. The condition is curable!

  10. excellent article Nobert, but very sad, shocking and informative.

  11. great article buddy, some sad defects.

  12. You have done a good job; very informative article! The pictures made me very sad.

  13. Nothin’ wrong with a little heterochromia. One of my best friends has one green eye and one brown eye. He says the brown one is the good one, somewhat jokingly. He’s slightly nearsighted and sees a bit better out of the brown eye. Then again, my eyes are the same color and I see better out of one than the other so I don’t think it’s due to the heterochromia.

  14. Very informative piece. We all need to count our blessings when we bring healthy babies into the world with no problems. So many things can go wrong!

  15. As someone with club feet I would like to say that it definitely is treatable and has been for sometime. I can assure you that the hours of surgeries and the weeks spent in the hospital were not spent without results.

    Other than that a great list. :-)

  16. Sometimes I wonder what God is up to. Let’s hope that the Human Genome Project can help prevent these things from happening. (I found your title a bit carnivalesque, I’m afraid, but maybe that wasn’t your intention.)

  17. Two of our four daughters were born with syndactyly in the toes of both feet and the fingers of the hand. Our oldest daughter had the worst case in the family, with three fingers of her left hand joined to the fingertips, two fingers on her right hand joined to the fingertips, and toes on both feet joined to the tips. Her first corrective surgery was at one year old. In some cases, the fingers bones are actually connected at the tips, but, thankfully, not so with our daughters. Very informative article.

  18. Congrats bro, you’ve made it again!You’re one of the great writer here in Triond.Keep it up!

  19. wow this was very intersting i never knew there were so many

  20. I tend to disagree with the information posted about club foot. My daughter was born with bi-lateral club foot, and was treated, and now has no traces of the problem. There is treatment, and most people who had it at birth, now will have no problems in the future.

  21. That is very informative and shocking, but why you don’t have pictures for the last ones?

  22. Well, Mihnea, would you really like to see a picture of a person with no skin? How about a person with an incomplete head? What about someone without a mouth? Didn’t think so.

    Great article Nobert buddy. Creepy yet informative.

  23. that’s crazy! great info though

  24. Good writing, but inaccurate. Athymia, as in “absence of the thymus” has no effect on emotions or feelings, in fact the thymus gland is part of the immune system and has virtually no effect on the brain. Athymia could mean absence of emotion, because thymoc means emotion in greek, but the two concepts are completely unrelated.

  25. i loved this, so cooll

    i find this stuff interesting .. excellent job :)

  26. Most of us who have all of our parts and features intact and placed where they should be, are cautioned that it’s not alway the case for many Humans our planet…

    These wonderful Humans provide an example that allows me to take another step towards gratefulness for what I’ve got, and to take better care of it.

  27. We have so much to be thankfull for. Many people are not so lucky.

  28. That is a very interesting article. I didn’t realize there were so many types of congenital abnormalities.

  29. This is all very sad and true. But I know for a fact that it’s not all hereditary but it may be caused also by environmental and behavioural factors. Man must investigate the real cause of these defects and how to prevent them from happening. Pregnant women must be very careful in how they live and what they have to eat and take in to their bodies (particularly medicines or substances that may be harmful to the fetus especially on the first trimester of their pregnancy) for the sake of the little soul clinging inside of them.

  30. thank you all,i appreciate your support very much

  31. Excellent job!!! Thanks for sharing

  32. this is a very interesting article indeed. thanks for putting it up for general awareness :)

  33. I would love to have Heterochromia. That would be really cool. I could be like Yuna from Final Fantasy XD.

  34. Congratulations, Mr. Norbert for writing such an informative and interesting article loaded with facts. Your articles are beautifully written and entertaining. Keep up the good work.

    God Bless,

    Nelson Doyle

  35. I learn a lot of things

  36. Nice page but FYI there IS very successful treatment of congenital club foot… has been for MANY years… I wonder where you got your info, or where you live for that matter, because this is fairly common knowledge & easily researcehed on the internet.

  37. very informative… thanks for sharing…


  38. very informative… thanks for sharing…


  39. I lol’d

  40. Club foot is easily treated in infants with a series of casts that gradually mold the foot and ankle back to a normal position, usually with the result that the child has no abnormal gait at all.

  41. I have syndactyly on both feet as well, pretty similar to the picture shown… it used to be very pronounced as a kid, but as an adult it doesn’t really show as much anymore. I didn’t even know it was an “official” defect, since it doesn’t hinder my walking ability in any way… I can imagine that having it on your hands would be a big problem though.

    Kind of funny though to see something I always considered fairly normal (my mother has it too) show up on a list of ‘most bizarre congenital defects’

  42. “Athymia
    Athymia is a condition of a person without emotion or feelings due to the congenital absence of the thymus gland”

    This supra statement is a gross mistake!.

    Athymia has no relation to emotion but to immunity: infections and rheumatic diseases.

    The associate occurence of mental/psychiatric disease is an effect of a contiguity syndrome as it may happen in the DiGeorge / Velocardiofacial syndrome.

    Congratullations for the rest of the wortk. I lile it very much

  43. wow….poor people…..thank you for bringing us this….it was truly stunning! You are amazing and informative…Keep it up!!! God bless these people

  44. Teaching and well documented.

  45. i feel privileged i was born normal. tnx God.

  46. it’s so sad to see baby’s with a hole life ahead of them, born with a (birth abnormalaty)…

  47. I’m not entirely sure that the photo of the child under Apodal actually applies, as he has no arms or legs and Apodal is stated simply as the absence of feet.
    As someone with heterochromia, I personally don’t see it as bizarre at all. I know several other people who have it as well. Many, many people have it and it does not affect eyesight (usually).
    Moreover, if someone has any of these conditions, it does not mean you must pity them. Saying “oh, that’s sad” and not doing anything about it doesn’t help them, doesn’t make their lives any easier. What does help is donating to charities that are researching cures and treatments.
    I also have Ehlers-Danlos Syndrome, a genetic collagen disorder that causes a person with it to have loose, flexible joints. People with EDS are often called “circus freaks”.There is no cure. If you took my suggestion to heart and are considering donating to a charity, check out EDS.
    A very interesting article, even if it is not completely accurate.

  48. nice share

  49. The information on Clubfoot is incorrect. It states that there is no cure for the condition, which could not be further from the truth. Babies who are born with clubfoot either get a cast put on the affected extremities so that the feet will straighten as the child grows, or they have surgery to correct the condition depending on the severity. My husband has a clubfoot and had surgery when he was eight months old. Because of the surgery, he has been able to walk normally, although he experiences foot discomfort after standing for long periods of time.

  50. It’s sad looking at these photos. But there is a cure for all of these. It’s strong faith & hard prayer. Faith is not that God can, it’s that He will. God does wonders.
    -Matthew 21:21 Jesus replied, “I tell you the truth, if you have faith and do not doubt, not only can you do what was done to the fig tree, but also you can say to this mountain, ‘Go, throw yourself into the sea,’ and it will be done.”
    -Luke 17:6 He replied, “If you have faith as small as a mustard seed, you can say to this mulberry tree, ‘Be uprooted and planted in the sea,’ and it will obey you.”
    -Luke 11:9 “And so I tell you, keep on asking, and you will receive what you ask for. Keep on seeking, and you will find. Keep on knocking, and the door will be opened to you.”

  51. These are really tough to look at!

  52. my daughter was born with bi-lateral club feet.. she is fine now thanks to dr. kevin latz at children mercy, who uses the posetti method thank god for him!!!

  53. My daughter is having a lobster foot can any one give details of the doctor., for wat can be done.

  54. I was born with no nails on three of my fingers on my left hand and a short middle finger on my right hand .And its ruining my life . I was called nubs all my life and constently hide my hand out of habit to the point of pain. Today I believe this is the cause of my anxiety attacks and depression . this site justr revealed something to me . I cried the whole time. No one ever really notices until maybe two mths of knowing me. So I distants myself quick . I wish I could have plastic surgery . I just want to be normal and fit in even now wow I’m alone i hold my hand tightly closed. the air causes me a pain I think my brain is creating. I want to die sometimes. I cant make any relationships work I hate my self. and people who love me cant understand why. Mentaly I am sick . Dear god plz save me. is this bdd if the deformity is real ?

  55. we need a doctor who can help us with a medical abnomality

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