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There was, and still is, a lot of speculation about what caused Beethoven's hearing loss. As with most medical conditions, there can be influences from genetic and environmental factors.
An analysis of locks of Ludwig van Beethoven’s hair suggest he had lead poisoning. It may have contributed to chronic ailments, deafness and — ultimately — his demise.
Many causes of autism, including environmental and genetic factors, have been recognized or proposed, but understanding of the theory of causation of autism is incomplete. [1] Attempts have been made to incorporate the known genetic and environmental causes into a comprehensive causative framework. [ 2 ]
Diagnoses of autism have become more frequent since the 1980s, which has led to various controversies about both the cause of autism and the nature of the diagnoses themselves. Whether autism has mainly a genetic or developmental cause , and the degree of coincidence between autism and intellectual disability , are all matters of current ...
The Handbook of autism and pervasive developmental disorders is a popular academic book about autism that was first released in 1987. The first edition was edited by Americans Donald J. Cohen (psychiatrist), Anne M. Donnellan [ 345 ] (educational psychologist) and Rhea Paul (speech pathologist).
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However, the squamous of Beethoven’s occipital is also listed among the cranial elements recovered during Beethoven’s second exhumation in 1888, and salient features of the squamous of Beethoven’s occipital (e.g. the curvature of the squamous on the horizontal plane; the overhang of the occipital) are likewise described in this same 1888 ...
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