One year and a half kid, her tongue became black for two days then return normal then it return black then normal and so on, the doctors don’t know how to diagnose that, so please if any saw similar case tell me

Is it normal to have a yellowish dicharge like mucus from the umbilicus? if not what is the treatment?

I am 40 years old, I feel a continuous headache with bone aches, I feel my body is irritable, today I had made a CBC and the Hb were 17 could that be related to what I am in?

I had burned my hands with chlorine, it’s cery painful, what could I put on them? In the hospital the only give me a mixture but it’s not effective

How I can know if I have allergy from certain drug mainly antibiotics?

All the kids I know these days suffers from a dry cough which transformed to wet cough, after two days fever started, it seems a viral infection but what can I do ? As my daughter started today? Is this a critical viruse or it’s a seasonal one?