My mum is 86 years old and for the last few months has on occasion been feeling breathless whilst sitting and is being driven mad by a feeling that the blood in her feet is boiling but the skin is cold to the touch. She has been tested for diabetes , asthma and both are clear. Her cholesterol is fine and her BP is generally ok. She remains active and goes dancing once a week . On these days her health seems ok so i suspect some of her symptoms may be psychological but her boiling blood is a real problem Thanks