7.Multiple Sclerosis
Muscle spasticity is a common muscle symptom when you have multiple sclerosis. Spasticity is a feeling of stiffness or tightness — spasms or long muscle contractions that happen randomly. These spasms can happen anywhere but are more common in your legs.
8.Lupus
Over 90% of people with the autoimmune disease lupus will have pain in their muscles and joints at some point. Around half have muscle pain as one of their first symptoms. It’s common to have muscle pain during a lupus flare.
