Extremity pain is defined as any kind of pain that is experienced in the upper or lower limb/extremity. The lower extremity starts from the hip while the upper extremity starts from the shoulder. Extremity pain has all sorts of causes and triggers.
Parkinson’s disease is a progressive and long-lasting movement disorder, which means that it continues and grows worse over time. Almost one million people in the US are suffering from this disease. The cause isn’t exactly known, and currently there is no cure