How common are painful armpit lumps in hidradenitis suppurativa?

Hidradenitis suppurativa commonly affects the armpits because blocked hair follicles can trigger deep inflammation. Lumps may feel tender and firm, enlarge, drain, and then return in the same area or nearby. Over time, repeated inflammation can leave scars or create connected tunnels beneath the skin. This pattern is different from a single short-lived spot, although the lesions may look like boils at first.

Use gentle cleansing, pat the area dry, and choose loose clothing that reduces rubbing. Avoid squeezing lesions and pause shaving over irritated skin. A warm compress may ease tenderness, but it does not replace assessment. Keep a brief record of flare timing, drainage, scars, and affected sites; these details help a dermatologist recognise the pattern and plan treatment.

Book a dermatology appointment when armpit lumps recur, drain repeatedly, cause scars, or limit arm movement. Seek prompt care for spreading redness, rapidly increasing swelling, severe pain, fever, or feeling faint or very unwell. Early assessment can distinguish hidradenitis suppurativa from infection and other causes of armpit swelling.

Ask whether your pattern fits hidradenitis suppurativa, what can reduce flares, and how to care for draining areas. Tell the clinician about recurrence, scarring, family history, smoking, and treatments already tried.