NURSING ANM AND GNM

Detailed explanation-1: -Upper motor neuron syndrome refers to a combination of resulting symptoms such as muscle weakness, decreased muscle control, easy fatigability, altered muscle tone and exaggerated deep tendon reflexes (also known as spasticity), all of which can occur after a brain or spinal cord injury.

Detailed explanation-2: -Although both upper and motor neuron lesions result in muscle weakness, they are clinically distinct due to various other manifestations. Unlike UMNs, LMN lesions present with muscle atrophy, fasciculations (muscle twitching), decreased reflexes, decreased tone, negative Babinsky sign, and flaccid paralysis.

Detailed explanation-3: -When the lower motor neurons cannot receive signals from the upper motor neurons, it can cause muscle stiffness (spasticity) and overactive reflexes. This can make voluntary movements slow and difficult. Over time, individuals with MNDs may lose the ability to walk or control other movements.

Detailed explanation-4: -Lower motor neuron (LMN) syndromes are clinically characterised by muscle atrophy, weakness and hyporeflexia without sensory involvement. They may arise from disease processes affecting the anterior horn cell or the motor axon and/or its surrounding myelin.