Muscular dystrophy is associated with:

-atrophy
-nerves controlling muscles
-stroke
-poliomyelitis
-degeneration of muscle cells

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"

loss of sensation to pressure and touch

the dorsal column–medial lemniscus pathway (dcml) (also known as the posterior column-medial lemniscus pathway (pcml)) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints.