I saw a random post about the symptoms of liver damage and how to recognise it. I have a few of the symptoms, so it made me google it. When the liver is struggling it can’t convert protein properly and it ends up as ammonia that passes out into the blood stream and makes our body toxic. Ammonia is an irritant that causes dry throats, coughing, sneezing etc. This theory ties up with people who have stopped eating protein and moved to a plant based diet, giving up alcohol which damages the liver, and more recently someone saying tamarind had helped them. Just a thought that this could be worth further investigation.