Although some of them have not yet been found to have a cure, there are many drug treatments and preventive measures to alleviate the symptoms and signs of all these disorders. These disorders include the following: (Foreign accent syndrome) After surviving a stroke or from an accident that led to a trauma that affected the brain, a small number of sufferers find themselves speaking with a strong foreign accent.

This syndrome is caused by injury to parts of the brain that affect speech and muscle coordination that occurs during speech.

This injury leads to changes in how the patient pronounces the letters, and the syllables he focuses on when pronouncing the word change. Moreover, a change in the location of his tongue occurs when he speaks.

It is mentioned that this syndrome does not make the sufferer speak a new language, except that it makes him speak with an accent that may be perceived by the one who hears him as from another country or region, which may make the injured appear strange in his country and region. It may also be a mixture of multiple dialects.

The first case of this syndrome recorded was a Norwegian girl in 1941, when this girl was hit by shrapnel in the head, which caused her to lose consciousness. When she woke up again, she started speaking with a strong German accent, which led to all her friends turning away from her, thinking that she was a German spy!

(Periodic Paralysis)

This hereditary disease causes the sufferer to feel episodes of muscle weakness or almost complete paralysis, but they are temporary, as they disappear within hours to a few days of infection. Muscles that become relaxed or temporarily paralyzed differ from one episode to the next in the same person.

It is noteworthy that the triggers for the occurrence of bouts of this disease, which affects approximately one person in every hundred thousand, include excessive salt intake, rest after doing exercises, in addition to hearing a sudden annoying sound.

(Frégoli syndrome)

It is a rare disorder that makes the sufferer under the illusion that everyone around him is nothing but one person, but that person disguises himself in different bodies to appear as other people, whether of the same or the opposite sex.

It is reported that people with this syndrome usually have a history of certain conditions related to the brain, including stroke, Alzheimer''s disease and head injuries.

(Cotard''s Syndrome)

It is considered a rare psychological disorder in which the sufferer is convinced that he is dead, meaning that his body is a corpse without a soul. And it is noteworthy that some of the injured are under the illusion that parts of their bodies are gradually rotting from the inside. He states that seeing his body moving does not discourage him from his delusions. Moreover, undergoing comprehensive examinations does not change the opinion of the injured person that he is no longer alive.

Although the cognitive performance of the injured is good, they believe that their limbs are inanimate flesh and their chests are emptied of life.

It should be noted that this syndrome, which was first recognized in 1880, is often afflicted by those who have severe depression. In addition, it may be associated with some symptoms of schizophrenia.