What does hyperaesthesia mean?
Hyperaesthesia is a medical term for abnormally heightened sensitivity to physical sensations. A person with the condition may experience touch, clothing, mild heat, or ordinarily harmless pressure as unusually intense, painful, or irritating. It differs from ordinary sensitivity because the response is disproportionate to the stimulus and may indicate an underlying sensory or nervous-system disorder. The sensation can be localised to one part of the body or more widespread. Hyperaesthesia is especially associated with nerve injury, neuropathic pain, and some inflammatory or skin conditions, although it should not be assumed to have a single cause without medical assessment. The term is chiefly clinical, with hyperaesthesia used in traditional British spelling and hyperesthesia in American English. It is related to but not synonymous with allodynia, which specifically describes pain caused by a stimulus that would not normally be painful.
nounHyperaesthesia is abnormally heightened sensitivity to physical sensations, especially touch, pressure, heat, or pain. It is often associated with nerve damage or sensory disorders and may affect a particular area of the body.
- Abnormally heightened sensitivity to touch, pressure, temperature, or pain, especially when caused by a sensory or nervous-system disorder.
"The treatment left her with temporary hyperaesthesia, making even the weight of the bedsheet uncomfortable."
"She experienced hyperaesthesia in her right hand after surgery."
"Patients with inflamed skin may develop hyperaesthesia, describing even light contact as painful."
Plural is uncommon because hyperaesthesia is usually discussed as a condition or diagnosis.
"The clinic documented cases of hyperaesthesias affecting the hands and feet."
Hyperaesthesia turns the nervous system into an alarm system: sensations that should be ordinary can become disproportionately intense.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does hyperaesthesia come from?
Hyperaesthesia combines the Greek prefix hyper-, meaning excessive or beyond normal, with a form related to Greek aisthesis, sensation or perception. The resulting term developed in medical usage to describe sensory responses that are abnormally acute. Its cognates include anaesthesia, anaesthetic, and aesthetic, all of which derive from the same Greek sensory root.
Related word forms
How hyperaesthesia is actually used
This is primarily a clinical term and is most often used in medical contexts. In British usage the traditional spelling is hyperaesthesia, while hyperesthesia is standard in American usage.
Easily confused with hyperaesthesia
Hyperesthesia is the American spelling of the same medical term; hyperaesthesia is the traditional British spelling.