Ill health often strikes us when we least expect it to. Like many others, you too might have experienced the sudden onset of a headache or an upset tummy at odd hours. At such times, running to the nearest clinic might not be an option; you might prefer not to step out at all, especially now with the growing Covid-19 community cases in the country. Yet, that constant ache in your head has you worried…how do you know what your symptoms are indicating or whether you should be concerned?