Q.Differentiate between myasthenia gravis and muscular dystrophy.

[!TLDR]

Myasthenia gravis is autoimmune and affects the neuromuscular junction; muscular dystrophy is mostly genetic and affects the muscle fibres directly. …

Myasthenia gravis is an autoimmune disorder: the body produces antibodies against its own acetylcholine receptors at the neuromuscular junction, impairing the transmission of the nerve signal to the muscle and producing fatigue and weakness that worsens with repeated use. Muscular dystrophy, by contrast, is a group of disorders that are mostly genetic in origin (Duchenne muscular dystrophy being the best-known example), in which the muscle fibres themselves undergo progressive degeneration over time, being gradually damaged and replaced by connective and fatty tissue. So while both disorders produce progressive muscle weakness, myasthenia gravis has it …

Compare the two disorders on two axes: their underlying cause (autoimmune vs. genetic) and the specific site affected ( …

Treating the two disorders as interchangeable simply because both cause muscle weakness -- their underlying c …