Eosinophilic granulomatosis with polyangiitis, also known as Churg-Strauss syndrome, is a rare autoimmune disease that affects blood vessels.

Sjögren's syndrome is an autoimmune disorder causing dryness of the eyes and mouth.

Raynaud's phenomenon: a condition causing blood vessel spasms, leading to reduced blood flow and color changes in extremities.

Crohn's disease is a chronic inflammatory disorder affecting the digestive tract.