3. Difficulty Breathing
Many different health conditions can cause us to have some difficulty breathing, from the common cold to asthma. Polycythemia vera is also accompanied by shortness of breath and this problem will become more pronounced when the patient is lying down.
According to research from John Hopkins Medicine, this is primarily related to the way polycythemia vera leads to the thickening of the blood, which can reduce the flow of oxygen-rich blood to various parts of the body, including the lungs. If you begin to have difficulty breathing and don’t have a condition that should cause this development, speak to your doctor immediately.