i too suffer HA, it hit me about a week ago, i had severe anxiety i thought i had a brain tumor, i felt weak at my knees and my elbows my body ached everything hurt so bad, it felt like i had such a fever as i only feel that way when i do, i just needed to lay down i could't stand i checked my temp and it was only 36.5, which is totally normal i was worried thoh if its not my fever then what is it.
i went to 7 doctors in the span of 2 days one hospital one mental ward and one medical clinic, they all checked me out and said i was fine.
and i was, all i had was anxiety, i was in such panic i saw white lights my left eye twitched my neck was tight my muscles for my shoulders were tight and my throat felt like it was closing also i could't breathe my chest as bounding i had hot and cold flashes my vision was a bit blurry my hears rang my hear had a heart beat and hurt i had ticks in my head and my leg i felt dizzy and felt like i wanted to throw up, i was shaking had headaches.
even with all these symptoms i was still physically okay.
it was all anxiety i had these symptoms for several days, but one by one they passed and i found new problems but they too faded away.
they fade away in time, i dint even believe the doctors but still i calmed when i herd i was okay, and one by one everyday i felt better, and i assure you, you will too.
there is no way the seven doctors i seen were wrong i even went to an ER, if they can pass me a clean bill of health with what i told them i am sure they can pass you too, they dint even have to check me, only one doctor did, he said i have the common cold, my anxiety made it severe it makes all your pains and problems feel worse then they are and makes you so tired as well.
even the slightest fan breeze made me shiver, everything was being amplified by the anxiety.
to clarify, its all anxiety.