Double freaks is a large category that includes all freaks that have more than one major organ in double.
It goes from the four-feet or double-breast freak to the real siamese twins. In the lower case, there is one conscious mind whereas conjoined twins have two minds. These two reunified individuals sometimes share their feelings but usually they have distinct personnalities, much as normal twin children.
While there are dozens of types of conjoined twins, doctors generally divide the types into the more common variations described in the below chart. All of these types can be more broadly categorized as displaying either equal and symmetrical forms or unequal and possible asymmetrical forms.
- Craniopagus Twins are joined at the cranium (the top of the head or skull). Occuring in just 2% of all conjoined twin cases, this is a very difficult type of twin to separate although advances in medicine have led to more than 35 successful separations. Two female craniopagus twins were successful separated in Lithuania in 1989, for example.
- Thoraopagus The most common form of conjoined twins, occuring in between 35-40% of all cases. The twins share part of the chest wall, possibly including sharing the heart.
- Pygopagus Twins are likely positioned back-to-back and usually have a posterior connecton at the rump. Occurs in almost 20% of documented cases.
- Ischiopagus About 6% of all conjoined twins have this condition, with the twins joined by the coccyx (lowest part of the backbone) and the sacrum (backbone immediately above the coccyx).
- Omphalopagus Twins are united from the waist to the lower breastbone, probably accounting for about 34% of conjoined cases.
- Dicephalus One body with two separate heads and necks. Abigail and Brittany Hensel of the United States are an example of this very rare type of conjoined twin. The Tocci Brothers, Scottish Brothers and Ritta and Christina were also examples of this type of conjoined twin.
Other double freaks
- Bicephalic monsters.
- Parasitic monsters.
- Monsters with a single body and double lower extremities.
- Diphallic terata.