Wife similar symptoms

Since March I have developed weakness and heaviness in both arms, both hands, both legs and difficulties swallowing. The symptoms began with burning pain and pins and needles on back of hands, followed by symptoms similar to nerve compession - tingling, pain, carpal tunnel syndrome reflexes. Within four weeks my arms and legs have deteriorated with quick fatigue, cramps, muscle spasms. Doing simple tasks gives pain as if I had run a marathon, lifted weights, taken extreme exercise.
This morning my wife visited her GP with symptoms simnilar to my initial symptoms, back of hand pain, pins and needles, hands quickly fatigued. Her GP said atypical of carpal tunnel and likely to be start of a neuropathy.
I have researched ALS/MND but can find no example of someone developing the disease after contact with someone suffering from the illness.
Anyone know of any syndrome/disease that is infectious that could explain the symptoms?