@sameemalhotra
All these are treatable. Do you have access to a major medical facility? There are great medications out there today along with many things psychologically that can really help your symptoms.

It is just that your symptoms to me should be addressed by medical and mental health specialists. Please don't think recommending a psychological specialist is negative. It is positive measure to take. Mental health is just as important as physical health as both have profound affect on each other.

I see a psychiartry medication specialist at Mayo every 6 months. I see my PCP every 3 months. I also have many specialist I see there. They all work as a team for what is best for me both physical treatments and mental health treatments.

I am not a medical professional thus don't want to recommend something that could affect what is causing your symptoms negatively. It seems to me you have a over senstive response to heat but then you mention hot showers help. The causes of that are what medical professionals should determine.

So my suggestions is you really need to go to a good medical facility be very honest (like you have here) and let them help you. I did and I never regret doing so decades later.