Papule

Papule — a small, raised, solid bump on the skin that is usually less than about five millimeters across and contains no visible pus. In the context of acne it forms when a clogged follicle becomes inflamed, often appearing pink or red and sometimes feeling tender to the touch.

Key points

• Papules are inflammatory lesions, distinguishing them from non-inflammatory comedones.
• They feel firm and solid rather than fluid-filled, which sets them apart from pustules.
• Redness and mild tenderness are common because of the underlying inflammation.
• Picking or squeezing papules can worsen inflammation and increase the risk of marks.
• A papule can evolve into a pustule if pus develops within the lesion.

Frequently asked

What is the difference between a papule and a pustule?

A papule is a solid, inflamed bump without visible pus, whereas a pustule contains a visible white or yellow center of pus.

Should I pop a papule?

Papules have no pus to express and squeezing them can intensify inflammation and lead to marks, so it is generally discouraged; persistent breakouts are best reviewed with a professional.

Related topics

• What Is a Humectant?
• What Is the Skin Barrier?

This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.