Dr.James Sebastian- the best physician in Kochi explains the silent killer which we call hypertension.Are there any symptoms As already discussed, most of the time people don’t even experience any symptoms. And if they do, it might have taken years or decades for the condition to reach up to that level. Some symptoms might include – headache, irregular heartbeats, nose bleeds, and visual change. Severe stage symptoms are fatigue, nausea, anxiety, and even chest pain. Studies show that there is an 80% chance of mortality if no medical intervention is taken for more than a year in the case of severe hypertension.