Total 12 clinical symptoms reported for Hypokalemic periodic paralysis, type 1  Very Frequent (4)Uncommon (3)Occasional (1)Not Applicable Or Unknown (2)Frequent (1)Always (1)

Abnormal muscle fiber morphology	Any abnormality of the skeletal muscle cell. Muscle fibers are subdivided into two types. Type I fibers are fatigue-resistant and rich in oxidative enzymes (they stain light with the myosin ATPase reaction), and type II fibers are fast-contracting, fatigue-prone, and rich in glycolytic enzymes (these fibers stain darkly). Normal muscle tissue has a random distribution of type I and type II fibers.   Synonyms:Abnormal skeletal muscle fiber morphology; Abnormality of muscle fibers	Very frequent
Episodic flaccid weakness	Recurrent episodes of muscle flaccidity, a type of paralysis in which a muscle becomes soft and yields to passive stretching.	Very frequent
Increased intramyocellular lipid droplets	An abnormal increase in intracellular lipid droplets In a muscle. The number and size of these drops can increase with somd disorders of lipid metabolism affecting muscle. See PMID 20691590 for histological images.	Very frequent
Paralysis	Paralysis of voluntary muscles means loss of contraction due to interruption of one or more motor pathways from the brain to the muscle fibers. Although the word paralysis is often used interchangeably to mean either complete or partial loss of muscle strength, it is preferable to use paralysis or plegia for complete or severe loss of muscle strength, and paresis for partial or slight loss. Motor paralysis results from deficits of the upper motor neurons (corticospinal, corticobulbar, or subcorticospinal). Motor paralysis is often accompanied by an impairment in the facility of movement.   Synonyms:Inability to move; Paralysis	Very frequent