In medicine, myopathy is a disease of the muscle in which the muscle fibers do not function properly. This results in muscular weakness. [Source: Wikipedia ]

May Be Caused by
Acne fulminans
Aluminum intoxication
Andersen syndrome
Anti-Jo-1 antibody syndrome
Barraquer-Simons syndrome
Barth syndrome
Behçet disease
Calmette Guérin vaccination
Carbohydrate-deficient glycoprotein syndrome
Carey-Fineman-Ziter syndrome
Carnitine deficiency syndrome
Cataract-cerebellar atrophy-mental retardation-myopathy
Christian syndrome
Crohn disease
Cushing syndrome
Dropped head syndrome
Duane anomaly - myopathy - scoliosis
Ethylmalonic-adipic aciduria
Gluten enteropathy
Glycogen storage disease type 2
Glycogen storage disease type 3
Glycogen storage disease type 5
GM1 gangliosidosis
Hashimoto thyroiditis
Idiopathic inflammatory myopathy of the antisynthetase Jo-1 type
Inclusion body myopathy
Infantile visceral myopathy
Intellectual deficit - cataracts - calcified pinnae - myopathy
Intellectual deficit - myopathy - short stature - endocrine defect
Jejunoileal bypass
Kawasaki syndrome
King syndrome
Magnesium deficiency
McLeod syndrome
MELAS syndrome
Mitochondrial diabetes
Mitochondrial myopathy
Mitochondrial myopathy-cardiomyopathy-cataract-lactic acidosis
Muscle phosphorylase kinase deficiency
Myasthenia gravis
Myopathy - growth delay - intellectual deficit - hypospadias
Myopathy-progeria syndrome
Myotubular myopathy
Nemaline myopathy
Paraneoplastic syndrome
Progeria-myopathy syndrome
Progressive external ophthalmoplegia - myopathy - emaciation
Rigid spine syndrome
Rippling muscle disease
Vitamin D deficiency
Waldenström hyperglobulinemic purpura
Xanthine oxidase deficiency