Hyperhidrosis is a condition in which the sweat glands produce more sweat than is needed for temperature regulation. It's broadly classified into two types:
Treatment is usually approached in a stepwise way, starting with simpler measures and progressing if needed:
Primary axillary hyperhidrosis is thought to result from overactive nerve signalling to otherwise normal sweat glands, and often runs in families, suggesting a genetic component. Secondary hyperhidrosis, by contrast, can be caused by a range of underlying factors, including:
Distinguishing between primary and secondary hyperhidrosis is an important part of assessment, since it affects which treatments are appropriate.
Yes — a Medicare rebate is available for botulinum toxin injections for the treatment of severe primary axillary hyperhidrosis, for patients who meet specific eligibility criteria, including having tried and not responded to (or been unable to tolerate) topical aluminium chloride treatment first, and limits on how frequently treatment can be repeated.
Because botulinum toxin is a prescription-only medicine, it can only be assessed and prescribed following a proper clinical consultation with a registered medical practitioner — it isn't something that can be requested without assessment. A dermatologist can confirm the diagnosis, rule out secondary causes, determine whether you meet the Medicare eligibility criteria, and advise on the most appropriate treatment plan for your individual situation.
Axillary hyperhidrosis refers specifically to excessive sweating of the underarms, the most common site for primary focal hyperhidrosis. It typically involves sweating well beyond what's needed for cooling, often soaking through clothing, occurring even at rest or in cool conditions, and affecting both sides symmetrically. It commonly begins in adolescence or early adulthood and can persist for life without treatment.
We recommend seeing a dermatologist if: