Changes

**Associated with HLA gene in humans

**Associated with HLA gene in humans

**No antibodies against acetyl choline receptors in serum

**No antibodies against acetyl choline receptors in serum

**Non-specific muscle [[Muscles - degenerative#Atrophy|disuse atrophy]] and fibrosis or no changes on histology

**Non-specific muscle [[Muscles Degenerative - Pathology#Atrophy|disuse atrophy]] and fibrosis or no changes on histology

*Both forms manifest as weakness which worsens on exercise

*Both forms manifest as weakness which worsens on exercise

*Hereditary in Collies and Shetland sheepdgs

*Hereditary in Collies and Shetland sheepdgs

*Lesions resemble [[Muscles - inflammatory#Canine polymyositis|canine polymyositis]]

*Lesions resemble [[Muscles - inflammatory#Canine polymyositis|canine polymyositis]]

*Also degeneration of blood vessels -> muscle [[Muscles - degenerative#Ischaemia|microinfarcts]]

*Also degeneration of blood vessels -> muscle [[Muscles Degenerative - Pathology#Ischaemia|microinfarcts]]

*Usually generalised but temporalis may be involved the most

*Usually generalised but temporalis may be involved the most

*Also involves [[Skin Immunologic - Pathology#Dermatomyositis|skin]]

*Also involves [[Skin Immunologic - Pathology#Dermatomyositis|skin]]

===[[Muscles - degenerative#Porcine stress syndrome|Porcine stress syndrome]]===

===[[Muscles Degenerative - Pathology#Porcine stress syndrome|Porcine stress syndrome]]===