Fatigue, Joint swelling, Rash: 4 Possible Causes
Let's see if we can figure out what's causing your symptoms.
Select additional symptoms and we'll narrow your results.

What causes fatigue, joint swelling and rash? 4 possible conditions

See a list of possible causes in order from the most common to the least.


Systemic Lupus Erythematosus

Systemic lupus erythematosus, the most common form of lupus, is a chronic autoimmune disease that can cause severe fatigue and joint pain. Learn more about it.

Read more »


Rheumatic Fever

Rheumatic fever is a complication of strep throat. If it's left untreated, it can cause permanent damage to your heart. Find out about symptoms and treatment.

Read more »


Lyme Disease

Lyme disease is an infectious condition transmitted via tick bite. A "bull's eye" rash at the site of the bite is an early symptom of this disease.

Read more »



Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.