Our expert says:
Lisa, it might be due to a blood clot or inflammation/infection of the veins. If it is due to the congestive heart failure his doses need to be adjusted, so the best would be for him to see his cardiologist and have it sorted out. Good luck.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.