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The specific molecular mechanism that underpins this movement disorder is not well known. [2] However, most researchers suggest that it follows an autosomal dominant genetic inheritance pattern in which mutations in certain genes give rise to structural abnormalities in nervous system networks responsible for voluntary skeletal muscle movement, which, in turn, result in the functional movement ...
Stereotypic movement disorder (SMD) is a motor disorder with onset in childhood involving restrictive and/or repetitive, nonfunctional motor behavior (e.g., hand waving or head banging), that markedly interferes with normal activities or results in bodily injury. [1]
GLUT1 deficiency syndrome: E74.810 Attention-deficit hyperactivity disorder (with hyperactivity) 314.01 F90 Tic disorders (involuntary, compulsive, repetitive, stereotyped) F95 Tourette's syndrome: F95.2 Stereotypic movement disorder: F98.5 Huntington's disease (Huntington's chorea) 333.4 G10 Dystonia: G24 Drug induced dystonia: G24.0
Handedness displays a complex inheritance pattern. For example, if both parents of a child are left-handed, there is a 26% chance of that child being left-handed. [23] A large study of twins from 25,732 families by Medland et al. (2006) indicates that the heritability of handedness is roughly 24%. [24]
Ideomotor Apraxia, often IMA, is a neurological disorder characterized by the inability to correctly imitate hand gestures and voluntarily mime tool use, e.g. pretend to brush one's hair. The ability to spontaneously use tools, such as brushing one's hair in the morning without being instructed to do so, may remain intact, but is often lost.
An older study found that left-handed people were better at "divergent thinking", and a more recent research cites lefties have better working memories and mental flexibility. 5. Don't get too ...
If the parents are both right-handed, in dizygotic and monozygotic twins there is a 21% chance of one being left-handed. If one parent is left-handed, in DZ and MZ twins there is a 57% chance of one being left-handed. If both parents are left-handed, it is almost certain one twin will be left-handed. [citation needed]
There has been a fair amount of research that associates left-handedness with the likelihood of psychotic disorders like schizophrenia. Can being left-handed really affect mental health? Skip to ...