Taylor Muhl always suspected she had a twin but she never thought the birthmark on her stomach was actually her sister fused to her body.
The California singer, 33, absorbed her fraternal twin while in the womb.
But it wasn’t until 2009 that she was diagnosed with a rare condition called Chimerism.
Everything on Muhl’s left side of her body is slightly larger and she has two immune systems and two blood streams.
Most noticeably, Muhl’s torso is divided straight down the middle with her skin color on one side and her twin’s pigmentation on the other. The large marking makes Muhl’s case even more rare because most Chimeras only display the symptoms internally or have very tiny marks.
Muhl wasn’t aware her ‘birthmark’ was a tell-tale sign of the rare condition until she watched a TV documentary on Chimerism.
Besides having her torso split down the middle with a different color, Muhl has always been plagued with sickness. She constantly has colds, splitting migraines and terrible menstruation cycles.
Chimerism is an extremely rare medical condition and is when an individual is composed of two or more genetically distinct cell lines originating from different zygotes.
Muhl learned she is allergic to certain metals on one side of her body but not on the other because of the different immune systems.
She gets hit twice as hard during flu season because both of her immune systems are weakened while they are fighting the other’s cells.
Since her diagnosis, Muhl has been trying to come to terms with her condition and understand it.
Muhl’s case is especially unique because she displays the symptoms externally, not just internally. In some cases, women have failed maternity tests for their children as a result of Chimeric genes.
These women had different blood DNA from their children because the DNA of the children belonged to the twin.