When I was a Rheumatology fellow, I was lucky to have two different chiefs of Rheumatology. One of the chiefs believed strongly in evidence based medicine and the other emphasized experience based medicine. I try to combine the teachings of both of these grandmasters of Rheumatology.
If you are a patient and think you may have an inflammatory arthritis, or even a physician evaluating the patients, there are clinical criteria for many conditions that could be used to help determine the diagnosis.
However, please keep in mind. These criteria are evidence-based, and sometimes you do need a touch of experience based medicine to apply these criteria to an individual.
Below are online calculators, that are based on evidence based medicine and clinical criteria to assist and help determine if a patient indeed has the condition.
Gout
https://goutclassificationcalculator.auckland.ac.nz/
Rheumatoid Arthritis
https://www.mdcalc.com/calc/10092/acr-eular-2010-rheumatoid-arthritis-classification-criteria
Psoriatic Arthritis
https://www.mdcalc.com/calc/10039/caspar-criteria-psoriatic-arthritis
Fibromyalgia
https://www.pediatriconcall.com/calculators/fibromyalgia-diagnostic-calculator
Scleroderma
https://rheuminfo.com/physician-tools/systemic-sclerosis-criteria-calculator/
Systemic Lupus Erythematosus
https://www.pediatriconcall.com/calculators/eular-criteria-for-sle
Still's / Adult-onset Still's disease (AOSD)
https://stillsnow.com/stills-disease-diagnosis-calculator/
Osteoporosis, Osteopenia, bone health - Fracture Risk Assessment Tool FRAX
https://frax.shef.ac.uk/FRAX/tool.aspx?country=9
Pseudogout
Calcium Pyrophosphate Deposition Disease Classification
2023 ACR/EULAR Classification Criteria
https://s3.amazonaws.com/bb.english.applications/ACR/Tools/interactive_0004116/interactive_0004116.html
Psoriatic Arthritis
PRESTO Tool Predicts the Risk of Psoriatic Arthritis
http://sharpmindtill120.x10host.com/PRESTO-PsA/
Systemic sclerosis (SSc), Scleroderma - pulmonary arterial hypertension (PAH)
Help assess for risk of pulmonary arterial hypertension (PAH) in patients with systemic sclerosis (SSc), or scleroderma
https://www.detectionofpah.com