Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Nobody like mine. The grandmother had pretty bad mouth sores apparently, and she said it improved with her Lupus medication.I have not tried steroids, so I cannot speak to that... All of my blood work has been during non-flareup times. And I have not been able to see a Rheumatologist yet.. ### Response: Periodic fevers can be autoinflammatory or infectious in nature. Stability of symptoms favors autoinflammatory which falls under the domain of rheumatology. I wonder if the referral was for mouth sores only; I would highlight the periodic fevers as the indication for further evaluation. You can suggest the possibility of adult onset periodic fever, aphthous stomatitis, pharyngitis and adenitis (adult onset PFAPA) to your PCP, although other similar conditions must be considered as well. A negative ANA does not rule these conditions out. Your PCP can rediscuss the case with the rheumatology department. I would also suggest requesting an appointment with a rheumatologist at an academic center as they tend to have more exposure to and interest in unusual conditions. I would also ask your PCP if a referral to an infectious disease specialist would be useful.Agree with /u/m3tac0gniti0n regarding steroids. Patients with PFAPA have significant relief with steroids, so assuming infection is felt to be unlikely a course of steroids started with the next flare may be useful for relief and for diagnosis.Best of luck.https://rarediseases.info.nih.gov/diseases/5657/periodic-fever-aphthous-stomatitis-pharyngitis-and-adenitis.