Glossary

Search results

Paraplegia

A condition resulting from injury to the thoracic, lumbar, or sacral segments of the spinal cord, causing partial or complete loss of motor function and sensation in the legs, pelvis, and trunk while arm and hand function is preserved. People with paraplegia can typically use…

Paresis(also: Partial Paralysis)

A partial loss of voluntary muscle movement, distinguished from full paralysis (plegia). Paresis can affect a single limb (monoparesis), one side of the body (hemiparesis), or all four limbs (tetraparesis), and may result from stroke, cerebral palsy, spinal cord injury, or…

Parkinsonian Tremor(also: Rest Tremor, Parkinson Tremor)

Parkinsonian tremor is an involuntary, rhythmic shaking that occurs primarily at rest and is associated with Parkinson's disease. It is caused by the reciprocal activation of antagonistic muscle groups and typically has a frequency of 4-6 Hz with a harmonic frequency…

Pervasive Developmental Disorder(also: PDD, PDD-NOS, Pervasive Developmental Disorder Not Otherwise Specified)

A historical diagnostic category encompassing a group of neurodevelopmental conditions characterised by delays in socialisation, communication, and restricted patterns of behaviour. Under the DSM-IV, Pervasive Developmental Disorders included autism, Asperger syndrome, childhood…

Presbyopia(also: Age-Related Farsightedness, Loss of Accommodation)

An age-related vision condition in which the eye gradually loses the ability to focus on nearby objects, typically becoming noticeable after age 40. Presbyopia affects the vast majority of older adults and is caused by the hardening of the eye's lens, reducing its flexibility.…

Proliferative Diabetic Retinopathy(also: PDR)

An advanced stage of diabetic retinopathy in which abnormal new blood vessels grow on the retina, causing bleeding, scarring, and progressive vision loss that can include blurred vision, floaters, dark spots, and partial or complete blindness. A major cause of acquired low…

6 results.