Hyperthyroid myopathy occurs when the thyroid gland produces too much of the hormone thyroxine, leading to muscle weakness, some muscle wasting in hips and shoulders, and, sometimes, problems with eye muscles.
The mice developed an inflammatory myopathy with clinical, biochemical, histological and immunological features similar to human myositis.
The removal of a single dolphin affects the remaining group in other ways beside causing widespread myopathy.
Robbin's text on pathology also contains sections on mitochondrial myopathy, stating that this kind of muscle wasting results in severe weakness.
An ischaemic lactate test may be helpful in suspected metabolic myopathy.