Proximal muscle weakness is not a feature of
Polymyositis
Myotonic dystrophy
Becker's muscular dystrophy
Duchene's muscular dystrophy
In Myotonic dystrophy the Muscles affected are Face(including ptosis), sternocleidomastoids, distal limb, generalised later. In all other above mentioned options the proximal muscles are affected. Reference : Harrison20th edition pg 2278
C.N.S