Comparison of symptoms of mercury poisoning and autism - page 1 of 4
Mercury Poisoning
Autism
Psychiatric Disturbances
Social deficits, social withdrawal, shyness
Depressive traits, mood swings; flat affect
Anxiety
Schizophrenic & OCD traits; repetitiveness
Lack of eye contact, avoids conversation
Irrational fears
Irritability, aggression, temper tantrums
Impaired face recognition
Social deficits, shyness, social withdrawal
Depression, mood swings; mask face
Anxiety
Schizoid tendencies, OCD traits
Lacks eye contact, hesitant to engage others
Irrational fears
Irritability, aggression, temper tantrums
Impaired face recognition
Speech, Language & Hearing Deficits
Loss of speech, failure to develop speech
Dysarthria; articulation problems
Speech comprehension deficits
Verbalizing & word retrieval problems
Sound sensitivity
Hearing loss; deafness in very high doses
Poor performance on language IQ tests
Delayed language, failure to develop speech
Dysarthria; articulation problems
Speech comprehension deficits
Echolalia; word use & pragmatic errors
Sound sensitivity
Mild to profound hearing loss
Poor performance on verbal IQ tests
Sensory Abnormalities
Abnormal sensation in mouth & extremities
Sound sensitivity
Abnormal touch sensations; touch aversion
Vestibular abnormalities
Motor Disorders
Involuntary jerking movements - arm flapping, ankle jerks, myoclonal jerks, choreiform movements, circling, rocking
Deficits in eye-hand coordination; limb apraxia; intention tremors
Gait impairment; ataxia - from incoordination & clumsiness to inability to walk, stand, or sit; loss of motor control
Difficulty in chewing or swallowing
Unusual postures; toe walking
Abnormal sensation in mouth & extremities
Sound sensitivity
Abnormal touch sensations; touch aversion
Vestibular abnormalities

Stereotyped movements - arm flapping, jumping, circling, spinning, rocking; myoclonal jerks; choreiform movements
Poor eye-hand coordination; limb apraxia; problems with intentional movements
Abnormal gait and posture, clumsiness and incoordination; difficulties sitting, lying, crawling, and walking
Difficulty chewing or swallowing
Unusual postures; toe walking
Source: Autism - A Unique Type of Mercury Poisoning
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