Medical Term for Hypersensation
The medical term for hypersensation is "hyperesthesia" (for general increased sensitivity to sensory stimuli) or more specifically "hyperalgesia" when referring to increased sensitivity to painful stimuli.
Terminology and Context
The specific term used depends on the sensory modality and clinical context:
Pain-Related Hypersensitivity
- Hyperalgesia: Abnormally increased sensitivity to painful stimuli - an exaggerated pain response to normally painful stimuli 1
- Allodynia: Pain response from stimuli that do not normally provoke pain (e.g., light touch perceived as painful) 1
Cough-Related Hypersensitivity
In the respiratory system, analogous terms exist:
- Hypertussia: Excessive coughing in response to noxious exposure 2
- Allotussia: Cough triggered by relatively inoffensive stimuli (similar conceptually to allodynia) 2
General Sensory Hypersensitivity
The broader clinical syndrome is termed "hypersensitivity" and can manifest across multiple sensory domains 3:
- Touch hypersensitivity
- Light sensitivity (photophobia)
- Sound sensitivity (hyperacusis)
- Movement sensitivity
Clinical Significance
Hypersensitivity represents a pathological state where the nervous system responds excessively to normal or low-level stimuli. This occurs through two main mechanisms 1:
- Peripheral sensitization: Increased sensitivity of peripheral nerve terminals due to inflammatory mediators
- Central sensitization: Increased excitability of spinal cord and brain neurons, amplifying sensory signals
Important Clinical Distinctions
When documenting or discussing hypersensation, specify:
- The sensory modality affected (tactile, thermal, auditory, visual)
- Whether it involves pain (hyperalgesia/allodynia) or non-painful sensations (hyperesthesia)
- The clinical context (post-inflammatory, neuropathic, functional disorder)
The term "hypersensitivity syndrome" is used in specific contexts like cough hypersensitivity syndrome, defined as troublesome symptoms triggered by low levels of thermal, mechanical, or chemical exposure 2.