Can lymph node infection in left back of the head lead to severe pain in dat whole side of head n numbness on dat side of head eye neck n arm????

Left sided headache. Lymph node infection may be either primarily in the lymphnode or may be secondary enlargement from the nearby structures. Based on the severity and the structures involved the symptoms described is possible, but have it checked out for underlying ear infection, mastoid infection etc, it could be migraine too.