Is Your Foot Feeling Like Marshmallows?

The patient is from the US originally, but has spent the last five months in the Peruvian pylens by unpacking. Three months ago, he noticed his feet felt like a mashmallows. And this sensation impairment worsened and ascended from the soles of his feet to his calves. One month before that mission, he developed weakness. First in his feet, the progress in an ascending fashion now compromising bilateral lower extremities.