Rheumatism can manifest in many different ways, but the most common symptoms are joint pain, swelling, and stiffness, especially in the mornings. Symptoms can start gradually and may vary daily. Rheumatism can also cause general fatigue and reduced overall health. Rheumatoid arthritis, one of the most common rheumatic diseases, often starts in small joints, such as the fingers and toes, and the symptoms are often symmetrical.