Noticing small, pimple-like bumps near your vulva in the days before your period can be alarming, especially if your first thought goes to infection. In most cases, when these bumps follow a clear premenstrual pattern and settle on their own, they're linked to the same hormonal shifts that affect skin elsewhere on your body, not an infection.

Why this happens around your period

The same hormonal fluctuations that can trigger breakouts on your face before a period can affect the skin around your vulva too. This area has hair follicles and oil glands just like other skin, and it's just as responsive to the hormonal swings of your cycle:

  • Rising progesterone in the days before your period can increase oil production
  • This can lead to blocked follicles or small, tender bumps, similar to how premenstrual acne develops elsewhere
  • These typically appear in a predictable window before your period and settle within a few days of your period starting or ending

When it's likely just hormonal

A pattern that points toward a benign, hormone-linked cause rather than infection usually includes:

  • Bumps appearing at roughly the same point in your cycle, cycle after cycle
  • No accompanying discharge, odour, or itching
  • Bumps that are small, may be mildly tender, and resolve on their own without treatment

A bump that shows up like clockwork before your period and disappears on its own is a very different pattern from one that's new, spreading, or accompanied by other symptoms.

When it's worth getting checked instead

Not every vulvar bump before a period is hormonal, and some patterns deserve an in-person look rather than assuming it's cyclical:

  • A bump that's new, painful, growing, or doesn't follow your usual premenstrual pattern
  • Bumps accompanied by discharge, odour, itching, or burning
  • Any sore, blister, or ulcer-like lesion, which needs direct evaluation rather than being assumed benign

Frequently asked

Are these bumps a type of STI?

Not typically, if they follow a clear premenstrual pattern and resolve on their own without other symptoms. Bumps linked to infections usually don't follow a monthly cycle in this way and often come with other signs like discharge or discomfort. If you're unsure, an in-person exam is the only way to be certain.

Should I pop or squeeze these bumps?

No. Popping skin bumps in this sensitive area risks introducing infection and irritation. Let them resolve on their own, and if they don't, or if they seem to be getting worse, have a doctor take a look.

Can hygiene products be causing this instead of hormones?

It's possible — new soaps, detergents, or hygiene products can also cause bumps or irritation in this area. If you've recently changed a product and the timing doesn't clearly match your cycle, consider that as a separate possibility worth ruling out.

When should I actually see a gynaecologist about this?

If the bumps are new, don't follow a predictable premenstrual pattern, are accompanied by discharge or odour, or if you're simply unsure and want reassurance, an in-person exam is the quickest way to get a clear answer.