Tingling in left thigh,heat sensation & minor numbness increases when I stand long (usually with weight on my back like a bag) , while standing in bus, train. This issue has been there with  me since last 8-9 years.Neck been sore since a month and usual movements are not restricted but turnjng the neck around gives pain which is mild. Please suggest what the issue might be and if they  are related and the right specialist to go to for diagnosis as I am confused if this is orthopaedic , neurological or something else