Patient 3 had action and percussion myotonia, wasting and weakness of sternocleidomastoid and distal limb muscles.
[neurologyindia.com]
He had hyperextensible joints, hyperelastic skin, pes planus, scoliosis, left facial hemiatrophy, primary optic atrophy and sensorineural deafness, distal limb weakness, hyporeflexia
[neurologyindia.com]
Most remarkable was percussion - and action myotonia [Figure - 2]B in all muscles of the limbs, facial musculature and tongue.
[neurologyindia.com]