I am far from disabled but I have multiple chronic issues, one of them being 100% visible to the naked eye and I've been told by multiple doctors to "not stress

I am far from disabled but I have multiple chronic issues, one of them being 100% visible to the naked eye and I've been told by multiple doctors to "not stress about it". And we're taking about a nail color change, a fingers temperature change during winter, and a constant feeling of headache that feels like worms are throwing a party under my hair (which they clearly don't). Also, for what it's worth, I'm from Europe and I tried both the free and the private health sector in my country. My only other options are to fly abroad for "medical tourism", but that would require a lot of money.