Autism Signs and Symptoms

Signs and Symptoms of Autism

A|B|C|D|E|F|G|H|I|J|K|L|M

N|O|P|Q|R|S|T|U|V|W|X|Y|Z

More information coming soon!

3-MCC Deficiency

3-Methyl-Crotonyl-CoA-Carboxylase Deficiency

3-Methyl-Histadine

4-Hydroxynonenal Protein Adducts

4E-BP2

6-Sulphatoxymelatonin (See also Melatonin as an Autism Treatment)

25-Hydroxy Vitamin D

A

Aberrant Precision

Absolute Pitch

Acquisition of New Face Representations

Action Planning

Activity-Dependent Signalling

Adaptive Behavior

ADHD

Adhesion Molecules

Affective Prosody

Affective Reactivity

Age of First Words

Aggression

Agoraphobia

Alexithymia

Aluminum

AMH

Amino Acids

Ammonia

Amyloid ß

Amyloid β-Protein Precursor

Anti-ds-DNA Antibodies

Anti-Gluten IgG

Anti-Müllerian Hormone

Anti-NMDA Receptor Encephalitis

Anxiety

Anxiety Separation Disorder

APP

Apraxia

Arsenic

Astrocytes

Atopic Dermatitis

Attachment

Attention

Attention Deficit/Hyperactivity Disorder

Attention Deficits

Attention Dysfunction

Attention Profile

Attention Shifting

Attentional Blink

Attentional Focusing

Attentional Networks

Attentional Switching

Atypical Cry

Atypical Gaze

Atypical Neural Lateralization

Auditory Pitch

Auditory Processing

Auditory Sensory Modulation

Auditory Stimuli Response

Audio-Visual Emotion Expression

Audiovisual Speech Integration

Audiovisual Temporal Order

Auto-Antibodies

Autobiographical Memory

Automatic Responses

Averted Gaze


B

B Cells

BDNF

Behavioral Attention

Behavioral Flexibility

Behavioral Problems

Behavioral Responses

Bilingualism

Biological Motion Perception

Biological Rhythms

Bipolar Disorder

Birth Weight

Blood Transcriptome

Body Language Processing

Body Mass Index

Body Motion Cues

Body Odors

Bone Mineral Density

Brain

Brain Derived Neurotrophic Factor

Brain Inflammation

Brain Network

Brain Network Architecture

Brain Reward Circuitry

Brain Volume

Brain Rhythms

Broader Autism Phenotype

Bronchoscopic Airway Anatomy

Bullying


C

Cadherins

CADM1

Cadmium

Calcium

Calcium Signaling

Canonical Wnt Signaling Pathway

Catatonia

Categorical Induction

Categorization

Category Processing

Cathepsin D

CD23

CD38

Cerebral Folate Deficiency

Change Blindness

Character Traits

Chemokine Levels

Circadian Rhythm

Cognition

Cognitive Control

Cognitive Flexibility

Cognitive Function

Cognitive Self-Organization

Cognitive Shifting

Cognitive Skills

Coherent Motion Discrimination

Color Obsessions

Color Phobias

Communication Difficulties

Communication Skills

Communicative Gesture

Compliment Factor I

Conceptualisation

Conductive Hearing Loss

Constipation

Continuous Movements

Cortical Visual Processing

Corticospinal Excitability

Corticotropin-Releasing Hormone

Cortisol

Cortisol Excretion

Cortisol Levels

Creatine

Creatine Transporter Deficiency

CRH

Criminal Behavior

Cry Acoustics

Crying

Cytokine Levels

Cytokines


D

Decoding Ability

Default Mode Network

Deictic Shifting

Dental Health

Depression

Depressive Disorder

Developmental Level

Developmental Trajectories

Dietary Habits

Digestive Tract

Digit Ratio

Direct Gaze

Discontinuous Movements

Dopamine Levels

Driving Performance

Dysmorphic Facial Features

Dysphagia

Dyspraxia


E

E6AP

EAAT3

Early Visual Processing

Early Language Milestones

Echolalia

EEG

EEG Mu Rhythm

EGF

Electrooculography Technology

Embarrassment

Emotion

Emotion Impairments

Emotion Perception

Emotional Problems

Emotion Processing

Emotion Recognition

Emotion Regulation

Emotional Resonance

Emotional Responses

Empathic Behavior

Empathy

Empathy Recognition

Employment

Encoding Non-Social Context

Encoding Social Context

EOG Technology

Epidermal Growth Factor

Epilepsy

Episodic Future Thinking

Episodic Memory

Epitestosterone

ERK Mitogen-Activated Protein Kinase Pathway

Error Awareness

Esophageal Achalasia

Essential Element Levels

Essential Mineral Levels

Event Detection

Event Encoding

Evoked Response

Excess Mortality

Excessive Crying

Excitation/Inhibition Imbalance

Excitatory Amino Acid Transporter 3

Excitotoxicity

Executive Control

Executive Dysfunction

Executive Functioning

Expression Perception

Expressive Drawing

Expressive Language

Eye Contact

Eye-Gaze

Eye Movements

Eye Region Search Accuracy

Eye Tracking

Eyewitness Memory


F

Face Memory

Face Perception

Face Processing

Face Recognition

Face Scanning

Facial Categorization

Facial Expressions

Facial Identity Recognition

Familiarity

Fatty-Acid Metabolism

Fear

Fecundity

Feeding Problems

Fetal Growth

Figurative Language

Fixated Interests

Flexibility

Fluent Speech

Food Neophobia

Food Selectivity

Folate/Homocysteine Pathway

Folate Levels

Folate Receptor Autoantibodies

Fractionation of Social Brain Circuits

Frequency Perception

Friendships

Functional Connectivity

Functional Defecation Disorders

Future Thinking


G

GABA

GABAergic Conductance

GABAergic Synaptic Transmission

Gait

Gait Symmetry

Gamma Activation

Gamma-Amino-Butyric-Acid

Gamma-Band Activity

Gamma-Band Responses

Gamma Synchrony

Gastrointestinal

Gaze

Gaze Aversion

Gaze Detection

Gaze Direction

Gaze Following

Generalization

Geometric Reasoning

Gestational Age

Gesture

Gesture Imitation

GI Tract

Global Processing

Glutamate

Glutamate Dehydrogenase

Glutamate Receptors

Glutamatergic Compounds

Glutamic Acid

Glutathione

Glutathione Redox

Glyoxalase 1

Grammar

Gross Motor Problems

Gross Motor Skills

Group Play

GSK3β

Gut Microbiome


H

Habituation

Hand-Eye Coordination

Hand Grip Strength

Hand Stereotypies

Handedness

Handwriting Difficulties

Head Circumference

Head Lag

Heart Rate

Height Abnormalities

Health-Related Quality-of-Life

Heart Activity

Heavy Metals

Hemodynamic Response

Heparan Sulfate Deficiency

Heparin

HERVs

Hippurate

Homocysteine Levels

Hospitalisation Rates

Human Endogenous Retroviruses

Hyperandrogenism


I

Iconic Memory

IgA

IgE

IKK/NF-κB Signaling

IL-2

IL-6

IL-17A

Ileocolitis

Imitation

Imitation Abilities

Imitation Skills

Immune Hypersensitivity

Immune System

Immunoglobulin

Impulsivity

Inattention

Incidental Learning

Individuation

Infantile Cerebellar Pilocytic Astrocytoma

Inflammation

Inhibin B

Insistence on Sameness

Insomnia

Insulin-like Growth Factor

Intentional Control

Interhemispheric Coherence

Interleukin-2

Interleukin-6

Interleukin-17A

Internet Addiction

Interpersonal Rocking

Interval Timing

Intonation

Iron Levels

Irritability

Isoprostanes


J

Jealousy

Joint Attention

Joint Mobility


K

Killer-Cell Immunoglobulin-Like Receptors

KIR


L

Language

Language Comprehension

Language Processing

Language Production

Language Skills

Large for Gestational Age

Lateralisation

Lead

Learning

Learning Difficulties

Learning New Faces

Left Visual Field Bias

Leptin

Leukotrienes

Lexical Composition

Lexical Stress

Local Processing

Local Processing Enhancements

Longitudinal Development

Low Birth Weight

L-Type Voltage Gated Calcium Channels


M

Macrocephaly

Magnesium Levels

Magnocellular Function

Major Histocompatibility Complex

Mammalian Target of Rapamycin Signaling

Mands

MAOA

MAOB

Matrix Metalloproteinases

Melatonin

Melodic Memory

Memory

Mental Rotation

Mercury

Metabolic Perturbance

Metabolic Profiles

Metabolite Alterations

Metabotropic Glutamate-Receptor

Metallothionein

Metamemory

Methionine Synthase

mGluR

Microglial Activation

Migraine Aura

Minerals

Mirror Drawing

Mirror Neuron System

Mirror Neurons

Mitochondria

Mitochondrial Dysfunction

Mitochondrial Electron Transport Chain

Mitochondrial DNA

MMPs

Moebius Syndrome

Monoamine Oxidase A

Monoamine Oxidase B

Mood Disorders

Mood Problems

Monitoring

Moral Judgement

Moral Reasoning

Morphological Features

Morphology

Motor Abilities

Motor Behaviors

Motor Functioning

Motor Learning

Motor Milestones

Motor Planning

Motor Proficiency

Motor Skills

Motor Variability

Movement Disturbance

mRNA Expression

mtDNA

mTOR Pathway

mTORC1

Müllerian-Inhibiting Substance

Multiple Object Tracking

Multisensory Facilitation

Multisensory Integration

Multisensory Processing

Music Interest

Myeloid Dendritic Cells

Myo-Inositol


N

N-Acetylaspartate

N-Acetyl-Aspartate

N-Acetylserotonin

Narrative Ability

Needle Phobia

Neonatal Brainstem Function

Neonatal Chemokine Levels

Neural Connectivity

Neural Responses

Neural Sensitivity

Neurexin

Neurocognitive Functioning

Neurodevelopmental Delay

Neuroinflammation

Neuroligin

Neuronal Connectivity

Neuropeptide

Neurosteroids

Neurotensin

Neurotrophic Factor

Neurotrophin

Neurotrophin-3

Neurotrophin-4

Nicotinamide

Nitric Oxide

NMDA Receptors

N-Methyl-D-Aspartate Receptors

Non-Protein-Bound Iron

Non-Word Repetition Impairment

Nonsocial Reward Processing

Npas4

Norepinephrine Levels

NT-4

NTFs

Nutrient Intake

Nutrition


O

Object Exploration

Obesity

Oblique Orientation Discrimination

Observational Learning

Obsessive Compulsive Disorder

Oculomotor Control

Olfaction

Olivofloccular Neuronal Circuit

Opioid System

Optic Nerve Hypoplasia

Oral Care

Oral Health

Oral Hygiene

Oxidative Damage

Oxidative Shielding

Oxidative Stress

Oxytocin


P

Pain Perception

Paranoia

Parent-Child Relations

Perception-Action

Perceptual Category Learning

Perceptual Generalization

Perceptual Load

Perception of Pointing

Perceptual Processing

Perceptual Updating

Peripheral Visual Field

Perfect Pitch

Personal Narratives

PDGF

PGE2

Phelan-McDermid Syndrome

Phenol Levels

Phrase Speech

Physical Activity

Physical Fitness

Picky Eating

Pitch Discrimination

Pitch Processing

Pitt-Hopkins Syndrome

PKC

Planning Actions

Planning Dysfunction

Plasma Cytokine

Plasma Oxytocin

Platelet-Derived Growth Factor

Pointing

Pointing Cues

Precision Grip

Preferences for Symmetry

Prepulse Inhibition

Presenilin

Pretend Play

Proactive Aggression

Pronoun Use

Propionic Acid

Proprioception

Prosodic Cues

Prosody

Prospective Memory

Prostaglandin E2

Protein Kinase C

Psychological Rhythm

Psychological Stress

PTEN Signaling

Pun Comprehension

Pupil Size

Pupillary Light Reflex


Q

Quality of Life


R

RAGE Levels

Reaction Time Variability

Reactive Aggression

Reactive Oxidative Stress

Reactive Oxygen Species

Reading Ability

Reading Comprehension

Receptive Language

Recognition Memory

Recollection

Re-Conceptualisation

Recreational Engagement

Redox Status

Reelin

Regression

Repetitive Behavior

Repetitive Movement

Resonance

Respiratory Sinus Arrhythmia

Response Inhibition

Response to Animated Characters

Resting-State Functional Connectivity

Restricted Behavior

Retinoic Acid-Related Orphan Receptor-Alpha

Reversal Learning

Reward Processing

RORA

Rule Learning


S

S100A9

S100B Protein

Saccade Adaptation

Salient Social Cues

Schizophrenia

School Performance

Seizures

Selective Eating

Self-Control

Self-Determination

Self-Development

Self-Face

Self-Injurious Behavior

Self Injury

Semantic Memory

Semantic Multisensory Processing

Sensorimotor Processing

Sensory Behaviors

Sensory Experiences

Sensory Issues

Sensory Over-Responsivity

Sensory Regulation

Sensory Sensitivity

Sentence Final Particles

Serine/Threonine Kinase Glycogen Synthase kKnase 3β

Serotonergic System

Serotonin Levels

Serotonin Polymorphisms

Severe Mood Problems

Short Chain Fatty Acid Levels

Sleep Problems

Small for Gestational Age

Smelling (Sense of Smell)

Social Acting

Social Anxiety

Social Attribution

Social Attention

Social Cognition

Social-Cognitive Performance

Social Competence

Social Difficulties

Social Disconnection

Social Engagement

Social Gaze

Social Gestures

Social Interaction

Social Judgement

Social Media Use

Social Monitoring Skills

Social Motivation

Social Orienting Mechanisms

Social Perception

Social Proficiency

Social Referencing

Social Responsiveness

Social Reward Processing

Social Rewards

Social Skills

Somatosensory Cortex

Somatosensory Response

Spatial Attention

Spatial Localisation

Speech Motor Function

sPECAM-1

Special Interests

Spectral Power

Spontaneous Attention to Faces

Spontaneous Initiation of Communication

Spontaneous Mimicry

sP-selectin

Stalking Behaviors

Startle Response

State Regulation Problems

Stereotyped Movements

Stereotypic Behaviors

Stereotypies

Stimulus Overselectivity

Stonin 2

Structural Language Skills

Substance Use Disorder

Succinate

Suicidal Thoughts

Suicide Attempts

Sulfate Levels

Sulfation Deficit

Sulfur Metabolic Deficiencies

Sustained Attention

Symbolic Play

Synaptic Plasticity

Syntactic Awareness

Synaptogenesis


T

Tacts

Tantrums

Task Switching

Television Use

Temperament

Text Comprehension

TGF-β

Theory of Mind

Time Perception

Timing Perception

TLR4 Pathway

TNF-α

Top-Down Modulation

Transforming Growth Factor-β

Transient Hypothyroxinaemia of Prematurity

Transition Planning

TrkB-PSD-95 Signaling

TSC

Tuberous Sclerosis Complex

Two-Legged Hopping


U

Understanding of Emotions

Unintentional Injury

Unsupervised Categorization

Urea

Urinary p-Cresol


V

Vascular Endothelial Growth Factor

Vasopressin

VEGF

Verbal Fluency

Verbal Initiations

Verbal Intelligence Quotient

Verbal Learning

Verbal Memory

Veridical Mapping

VGKC

Violent Behavior

Vision

Visual Acuity

Visual Attention

Visual Change Detection

Visual Change Processing

Visual Event-Related Potentials

Visual Feedback

Visual Learning

Visual Memory

Visual Orienting

Visual Perception

Visual Processing

Visual Scanning

Visual Search

Visual Short-Term Memory

Visual Temporal Resolution

Visual Working Memory

Visuo-Motor Function

Visuomotor Resonance

Visuospatial Processing

Vitamin B12 Levels

Vitamin D

Vitamin D Deficiency

Vocalization Development

Volitional Oculomotor Control

Voltage-Gated Potassium Channels


W

Whole Body Motion

Wnt/Beta-Catenin Signaling

Wnt Signaling Pathway

Word-Formation Difficulties

Working Memory


X


Y


Z
Zinc
Zinc Deficiency

 

Additional Resources:

  • Additional Information on Autism

Autism Signs and Symptoms

Autism Genetics: Research List for BAIAP2 Gene Associated with Autism

BAIAP2 Gene Research List

2011 Research

Association Study of Six Candidate Genes Asymmetrically Expressed in the Two Cerebral Hemispheres Suggests the Involvement of BAIAP2 in Autism

  • Letter to the editor
  • Included 820 individuals (330 individuals with autism spectrum disorders and 490 individuals in the control group)
  • Researchers studied 6 candidate genes that played a role in normal brain asymmetry in the developing brain
  • Initial screening suggested 2 of the 6 candidate genes might be associated with autism
  • Further analysis revealed that only 1 of the 6 original candidate genes showed a significant association with autism

 

Additional Resources:

Autism Genetics: Candidate-Gene Screening and Association Analysis at the Autism-Susceptibility Locus on Chromosome 16p: Evidence of Association at GRIN2A and ABAT

ABAT Gene and Autism Research:

Autism Research Demonstrates a Relationship Between Autism and the Genes GRIN2A and ABAT
Autism Research Demonstrates that ABAT and GRIN2A Variations Are Likely Related to Autism

Many studies have demonstrated that genetics play a key role in autism.  Despite this evidence, researchers still have not identified a genetic variation that accounts for the majority of autism cases.  However, there have been several genes identified that may account for a small percentage of autism cases.  This 2005 genetic research focused on chromosome 16p.  The researchers were able to identify 2 possible candidate genes that are likely associated with some cases of autism.  The findings were published in an article titled Candidate-Gene Screening and Association Analysis at the Autism-Susceptibility Locus on Chromosome 16p: Evidence of Association at GRIN2A and ABAT.

The researchers selected 10 candidate genes located at 16p11-13.  From analysis of the 10 genes, 7 genetic variations were identified that resulted in an amino acid substitution in the encoded protein.   However, the researchers determined that 5 of the 7 genetic variations were not significant enough to bring about a sufficiently drastic change in the encoded protein structure/function so as to result in autism.

The variants from the candidate genes were screened against 239 individuals from the International Molecular Genetics Study of Autism Consortium.  The genotypes were also screened against 239 individuals with autism and 192 control individuals.  These screenings suggested that ABAT, CREBBP, and GRIN2A were possibly associated with autism.

Researchers identified 12 single-nucleotide polymorphisms (SNPs) that occurred within ABAT, CREBBP, and GRIN2A.  Further analysis demonstrated that genetic variations in GRIN2A and ABAT were associated with autism, with GRIN2A being more strongly associated with autism than ABAT.

 

Source:

Barnby, Gabrielle et al. “Candidate-gene screening and association analysis at the autism-susceptibility locus on chromosome 16p: evidence of association at GRIN2A and ABAT.” The American Journal of Human Genetics 76.6 (2005) : 950-966.

Additional Information: