UMN, Upper Motor Neuron

Clinic

• UMN Pathways are first-order neurons, responsible for carrying signals that Initiate / Modulate / Coordinate movement.
• The major UMN tract that initiates voluntary movement is the pyramidal tract.
• Any problem in UMN Pathways, named UMN entity

Sign / Symptoms

UMN entity has these Sign / Symptoms

• Muscle Weakness
• Decreased motor control including Speed, Accuracy and Dexterity
• Hypotonia or Hypertonia
• Decreased endurance
• Exaggerated deep tendon reflexes including:
  • Spasticity
  • Hyper reflexia
  • Clonus
  • Reappearance of primitive reflexes, such as the extensor plantar response (Babinski sign)

Causes

Dynamic	Static
Primary lateral sclerosis ALS Motor Neuron Disease	Upper motor neuron lesions

Entity / Miasms

	GSS	JE	CJD	NVCJD	HTLV-1	EEE/ WEE
Hyper Reflexia	+++	+++	+++	+++	+++	+++
Primitive reflexes				+++	+++
Incoordination	+++		+++	+++
Paralysis	+++	+++	+++		+++	+++

Note

• UMN tract is initiating and coordinating movement.
• So I suggest The rubric "Spastic paralysis" for problem in initiating muscular movement
• And also the rubric "Incoordination" for problem in coordination