Muscle hypertonia (None)

Muscle hypertonia describes a clinical condition of excessive muscle tone, commonly caused by damage to motor pathways of the central nervous system[1][3][6][7]. It frequently presents with stiff, difficult-to-move limbs, and may result in increased risk of falls, contractures, and immobilization complications[1][6][7]. The condition may manifest as spasticity (velocity-dependent increased muscle tone and exaggerated reflexes) or rigidity (uniform increased tone regardless of movement) depending on the underlying neurological disorder[2][4][6][8]. Treatments focus on symptom control, primarily using physical therapy, muscle relaxant medications (like baclofen), and injectables (like botulinum toxin), tailored to the individual patient's needs and disease context[5]. Muscle hypertonia itself is not a molecular target for drugs but reflects dysfunction or disease in underlying neural pathways or molecular targets such as GABA_B receptors, alpha motor neurons, or neuromuscular junctions[5].

Other names

HypertoniaIncreased muscle toneStiff muscle toneSpasticityRigidity

Central nervous system depressants (such as baclofen, which acts as a GABA_B receptor agonist to reduce muscle spindle activity); Chemodenervation (botulinum toxin blocks acetylcholine release at neuromuscular junction); Neurolytic agents (phenol injection produces local nerve block)