Your Underarms Have RSVP'd: The Pre-Party Pit MOT

Party season is approaching with the subtlety of a glitter cannon. The invitations are stacking up, the tights are being negotiated, and somewhere in the wardrobe a sequinned top is waiting to make your underarms feel like they have been wrapped in sandpaper. Lovely.

Before you zip yourself into something fabulous, spare five minutes for the bit of your body that has been quietly holding up the whole operation: your pits. This is not about perfection. It is about noticing what is normal for you, so that anything new gets the attention it deserves. Talk pits, check pits, love pits. It is a whole thing.

Why your pits deserve a pre-party moment

Underarms are busy places. They bend, stretch, sweat, get shaved or waxed, and spend December being squashed into sleeves, strappy dresses and the kind of coat that makes you walk like a Regency ghost. They also contain skin, hair follicles, sweat glands and lymph nodes, which means they can produce a proper variety of lumps, bumps and rashes. Most of it is boring and harmless. Some of it is worth checking.

A quick self-check is not vanity and it is not a diagnosis. It is just a date with a mirror. Think of it as a pre-party MOT: not because your body is a car, but because both benefit from somebody actually looking at them before the warning light comes on.

The five-minute mirror ritual

You need a mirror, decent light and roughly the time it takes to decide which party snack you will hover near first. A hand mirror or your phone camera can help you see the back of your underarm. No special equipment required.

1. Stand in front of the mirror and raise one arm. Look at the front, back and side of your underarm. Then swap sides.
2. Feel gently with flat fingers. You are not kneading dough. A light, circular feel is enough. Do not prod or squeeze anything you find.
3. Compare left and right. Bodies are not symmetrical, and most of us have one side that does its own thing. The thing to notice is a new, one-sided change.
4. Look at the skin itself. Redness, scaling, a persistent rash, a new bruise you cannot explain, dimpling or a patch that feels thicker than the rest.
5. Notice sweat and smell patterns. Sudden unusual sweating, or a change in odour that comes with a rash or pain, is worth a note.
6. If you have breasts, include your usual breast awareness. Underarm tissue sits close to the tail of breast tissue, and an underarm check does not replace checking your breasts.
7. Make a note on your phone if something catches your eye. A pit diary sounds deeply unglamorous, but it is useful for spotting whether something is new or has been there for ages.

What to look for without spiralling

Let us be clear: finding something does not mean something terrible is happening. Underarm lumps are often cysts, hair follicle problems, lymph nodes reacting to a cold, or hormonal lumpiness. Rashes are often eczema, friction, sweat, shaving irritation or a reaction to a product. But there are patterns worth taking to a GP.

Lumps and swelling. A new lump or swelling that lingers for more than two weeks, feels hard or fixed, is growing, or comes with skin dimpling or puckering should be checked. Painful lumps can be checked too. Do not wait for it to become a festive tradition.

Rashes. Persistent redness, scaling, itching, burning or raw skin deserves attention, especially if it is spreading, weeping or not settling with a simple routine. Underarm rashes can be eczema, fungal infections, contact dermatitis or hidradenitis suppurativa, which can cause painful boils and tunnels under the skin. A pharmacist can help with many everyday rashes; a GP can help if it keeps coming back.

Colour changes. A new unexplained bruise, spreading redness, dark velvety patches or skin that looks and feels thicker than usual is worth a GP conversation. Most of the time there will be a simple explanation. The point is to get it looked at rather than staring at it in the bathroom mirror until January.

Pain. Persistent pain, or pain with swelling, redness and feeling unwell, can suggest infection. If you have a hot, swollen, painful underarm and a fever, do not sit on it. Contact NHS 111 or your GP urgently.

Unusual sweating. Everyone sweats. But a sudden change in sweating, drenching night sweats, or sweating alongside unexplained weight loss or fever should be checked. It is probably nothing dramatic, but it is a GP kind of nothing-dramatic.

Odour changes. Body odour is normal. A sudden strong change in smell, especially with a rash, pain or a lump, is worth mentioning. Do not just layer on more deodorant and hope for the best.

When to contact a GP

Book a GP appointment if you notice a new underarm lump or swelling that lasts more than two weeks, a lump that feels hard or fixed, skin dimpling or puckering, a persistent or spreading rash, recurrent painful boils, or pain and swelling with fever. If you have breasts, also get familiar with nipple or breast changes and mention them. Drenching night sweats or unexplained weight loss are GP conversation starters too.

This is not a list to memorise with dread. It is a list to make action easier. Most checks end with a shrug and a biscuit. Some end with a useful treatment or a bit of reassurance. Either way, you have done the sensible thing.

Party-season pit etiquette that loves your body

Go easy on the scrubbing. Underarm skin is delicate, and a vigorous exfoliation session before a party is less self-care and more DIY rash. If you shave or wax, leave a buffer before the big night, especially if you are prone to irritation. Patch-test new products before you commit to a whole evening of stinging.

Choose breathable fabrics where you can, wash and dry your underarms properly, and apply deodorant to dry skin rather than damp skin. If a product stings, stop using it. Perfume is not a deodorant, and neither is hope.

And if you do find something, tell a friend if that helps. Talking about pits is not weird. It is just the sort of low-key health chat we should all be having between the mulled wine and the mince pies. Sequins can be loud. Your pits do not have to be.