Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: F19 ANA development (possibly rapidly?)So context: I'm not allergic to anything and never have been. In November of 2019 I had what I thought was a bug bite on my elbow that exploded into full hives and three days later I was in the ER getting an epinephrine drip (I think. I was super out of it and my mom was too beside herself with worry to focus on what they did) because it developed to the point where my ears and lips were swollen and my throat tightened up significantly. Following that, I've been on heavy antihistamines (A and B) and can't get off them without the hives come back. I've also been having joint pain randomly since then (wrists and ankles primarily)In January of 2022 my allergist ran a lupus diagnostic panel on my blood but there wasn't anything other than general inflammation flagging the systemProblems continue to occur and my former pediatrician got me in with a local rheumatology clinic. I finally get in December 2022 (I'm in college and it had to be while I was on break) and I get the results and I have speckled+homogenous ANAs at a 1:160 ratioTL;DR ANAs went from not showing up to 1:160 in the span of 11 months. Any clue what's up?. ### Response: An ANA is a nonspecific test, not a diagnosis. https://www.rheumatology.org/I-Am-A/Patient-Caregiver/Diseases-Conditions/Antinuclear-Antibodies-ANA.