What’s the difference between an acne cyst and an acne nodule?

What’s the difference between an acne cyst and an acne nodule?

Nodular acne and cystic acne are very similar. Both cause deep, painful bumps under the skin. And both can scar. Differences include:

• Acne cysts are filled with pus, a fluid.
• Acne nodules are more solid and harder than acne cysts because they don’t contain fluid.