If someone has FFI, they have the potential to pass the mutated gene on to their own children.

Symptoms of Fatal Familial Insomnia
The primary symptoms of FFI are:
- Insomnia: Difficulty falling or staying asleep.
- Memory loss: A gradual decline in cognitive function.
- Muscle twitching or jerking: Uncontrollable spasms or movements.
Other symptoms include:
- Overactive nervous system responses, such as:
- High blood pressure.
- Rapid heart rate.
- Anxiety.
- Hallucinations: Seeing things that aren’t there.
- Weight loss.
- Mental health changes, which may resemble dementia or Alzheimer’s disease.
Symptoms can appear between the ages of 20 and 70, with the average onset around 40 years old. Early signs are often mistaken for other neurological conditions, making diagnosis even more challenging.

Is There a Cure?
Unfortunately, there is currently no cure for FFI. The symptoms are life-threatening, and research is ongoing to find treatments that might slow the progression of the condition or extend life expectancy.
Death from FFI results from damage to the brain and nervous system, leading to severe mental decline and the inability to sleep.
Life expectancy following the onset of symptoms can range from a few months to a couple of years. Treatment typically focuses on palliative care to provide comfort and support as the disease progresses.
FFI is a stark reminder of the vital role sleep plays in overall health and the profound impact genetic mutations can have on the brain and body. While research continues, the rarity of this condition highlights the importance of raising awareness and advancing medical understanding of prion diseases.