What skin condition is a closed capsule or sac like structure, filled with fluid, semi-solid or gaseous material?

What skin condition is a closed capsule or sac like structure, filled with fluid, semi-solid or gaseous material?

What skin condition is a closed capsule or sac like structure, filled with fluid, semi-solid or gaseous material?



A. Cyst
B. Erosion
C. Bulla
D. Blister







Answer: A