Somatosensory disorder

Under sensory impairment or hearing loss is defined as a neurological symptom in the form of a changed perception of sensory stimuli from the body periphery.

Overview

In the examination of sensory disturbances to distinguish between the different sensory qualities ( touch, temperature, vibration, pain, motion, position, force) should always be made. Thus, for a nomenclature of sensory disturbances up.

Qualitative changes

Paresthesias are often described as " tingling ", " pins and needles ", " Pelzigkeit " or " electrifying feeling." They are usually in the coverage area of single nerve or glove and stocking-like distribution localized at the ends of limbs. Can cause the hyperexcitability of peripheral, sensitive receptors and nerve fibers or centripetal paths, his brain strands among others. Dysesthesia and paresthesia are often also called paresthesia.

  • Dysesthesia - qualitatively altered perception, which is opposite to the sense of healthy unpleasant
  • Paresthesia - unpleasant to painful sensations without adequate stimulus (sort of alone)

Loss or reduction of sensory perception

It can generally come to a complete loss of sensitive afferents, so that no feelings are present in the affected region. The respective generic term can cause several problems to be subordinated, affecting only a few sensitive modalities thereof.

  • Anesthesia ( sensory disturbance ) - complete failure Analgesia - completely repealed pain sensitivity
  • Pallanästhesie - complete loss of vibration perception
  • Thermanesthesia - Reversed sensitivity to temperature differences

It also be distinguished disorders, weaken the sensible perception (general or modality ).

  • Hypoesthesia - general: attenuated sensitive perception; specifically: reduced tactile perception ( tactile sensitivity ) Hypalgesia - decreased pain perception
  • Pallhypästhesie - reduction of vibration perception
  • Thermhypästhesie - decreased sensitivity to temperature differences
  • Dissociated sensory loss - only certain qualities in a dermatome or a limb are disturbed

Increase the sensitive perception

  • Allodynia - pain sensation triggered by stimuli that normally cause no pain
  • Hyperpathia - tactile stimuli are perceived as unpleasant or painful
  • Hyperalgesia - increased pain sensitivity ( even slight stimuli can appear painful; cf. allodynia)
  • Hyperesthesia - increased tactile sensitivity

Therapy

One possible therapy depends on the underlying disease.

307507
de