Biker’s palsy occurs as a result of a firm grip on bicycle handlebars for hours to
days and longer. There are two nerves affected most often: ulnar and median. Both these
nerves pass through the wrist to the hand.
Prolonged pressure can cause numbness, tingling, and weakness. Nerve involvement of this
kind is called neuropathy.
A similar problem can occur in motorcylists as well as anyone handling high-power tools
that vibrate like a jackhammer.