This glossary is designed to explain some of the scientific terminology, abbreviations etc. used by some people when they talk about autism or research.

You may be able to find more information, including links to other parts of this website, by clicking on the title of an item.
If you can’t find the word you are looking for, or you know of a word we should include, please email info@researchautism.net
The fact that an intervention is listed in this glossary does not necessarily mean that we agree with its use. Nor does it necessarily mean that there is any scientifically valid or reliable evidence behind it.
Over time we hope to evaluate each of the interventions listed in this glossary, providing a ranking which tells you the level of scientific evidence which supports or does not support its use. For more information please see Treatments and Therapies for Autism Currently Under Scientific Evaluation by Research Autism
Condition characterized by overactive, poorly controlled behaviour and lack of concentration, most frequently seen in children.
Another term for hyperbaric therapy, which is the medical use of oxygen at a higher than atmospheric pressure.
Another term for hyperbaric therapy, which increases atmospheric pressure to allow the body to incorporate more oxygen into the body.
The medical use of oxygen at a higher than atmospheric pressure.
Abnormal discomfort caused by sounds that are tolerable to listeners with normal hearing.
Another term for St. John’s Wort, a plant used to treat a range of conditions including depression.
Another term for hyperactivity, a condition characterized by overactive, poorly controlled behaviour and lack of concentration, most frequently seen in children.
Another term for Attention Deficit (Hyperactivity) Disorder, a condition in children who have three main kinds of problems: overactive behaviour (hyperactivity), impulsive behaviour, and difficulty in paying attention.
Condition in which the main characteristics are an above normal ability to read accompanied with a below normal ability to understand spoken language.
Another term for hyperbaric therapy, which is the medical use of oxygen at a higher than atmospheric pressure.
Hyperprolactinaemia or hyperprolactinemia (HP) is the presence of abnormally-high levels of prolactin in the blood.
Abnormal immunological reaction produced in certain individuals when re-exposed to antigens that are innocuous to other individuals. More common in people with autism.
The use of hypnosis to treat a variety of medical and psychological problems.
Hypnotics is another term for anxiolytics, a class of drugs used to treat feelings of anxiety or nervousness caused by stress or psychological problems. They are also used for sleeplessness and other problems.
Condition in which there is not enough calcium in the blood.
Reduction of auditory acuity. The opposite of hypercusis.