Muscle spasms

Muscle spasms are involuntary, sudden, and often painful contractions of one or more muscles, typically resulting from muscle fatigue, dehydration, electrolyte imbalances, or underlying neurological conditions such as multiple sclerosis or spinal cord injuries (StatPearls, 2023). It is important to note that 'Muscle spasms' is a clinical symptom or medical condition rather than a specific molecular target like a receptor, enzyme, or ion channel (NIH, 2022). Pharmacological treatments, commonly referred to as muscle relaxants, do not 'target' the spasm itself but rather interact with specific proteins to modulate neuromuscular activity. For instance, baclofen acts as an agonist at GABA-B receptors to inhibit spinal reflexes, while tizanidine acts as an alpha-2 adrenergic agonist to increase presynaptic inhibition of motor neurons (PubMed, 2021). Because this entry describes a physiological manifestation of various pathologies rather than a single biological molecule, it is classified as an incorrect therapeutic target name for structured drug discovery databases.

Other names

Muscle crampInvoluntary muscle contractionMuscular hypertoniaSpasticityCharley horse

Muscle spasms are managed by drugs that target various pathways in the central nervous system to reduce motor neuron excitability, including GABA-B receptor agonism, alpha-2 adrenergic receptor agonism, and general CNS depression.