Many people with polycythemia vera don't have noticeable signs or symptoms. Some people might develop vague symptoms such as headache, dizziness, fatigue and blurred vision. More-specific symptoms of polycythemia vera include: 
Itchiness, especially after a warm bath or shower
Numbness, tingling, burning, or weakness in your hands, feet, arms or legs
A feeling of fullness soon after eating and bloating or pain in your left upper abdomen due to an enlarged spleen
Unusual bleeding, such as a nosebleed or bleeding gums
Painful swelling of one joint, often the big toe
Shortness of breath and difficulty breathing when lying down
