What should you know about tiny cyst on scalp?

A pilar cyst, also called a trichilemmal cyst, forms from cells associated with a hair follicle. It may feel smooth, firm, and rounded beneath the scalp, and the skin over it can look normal. Some people have more than one. A cyst can remain quiet for a long time, while rubbing, pressure, or inflammation may make it tender or swollen. A lump is not diagnosed by touch alone; other types of skin lumps can feel similar.

Do not squeeze, pierce, or repeatedly press the area, because this can irritate the skin and introduce infection. Keep the scalp clean and note whether the lump is changing, catching on a comb, or becoming uncomfortable while sleeping. A clinician can examine it and explain whether observation is reasonable. If it is bothersome, recurrently inflamed, or difficult to manage, [Cyst Removal](/treatments/surgical-dermatology/cyst-removal/) may be discussed. More general information about [Skin Lumps](/symptoms/skin-lumps/) can help you describe what you notice.

Arrange a prompt assessment if the lump becomes rapidly larger, increasingly painful, hot, red, or starts releasing fluid or blood. Seek urgent care if redness spreads, pain is severe, or you feel unwell with fever. A new lump that remains, repeatedly returns, or changes in texture also merits a routine dermatology review.

Ask whether the lump has features of a pilar cyst, whether it can be observed, what signs suggest inflammation, and whether removal would leave a scar or require wound care.