There are several treatment options available for primary hyperhidrosis both localised and generalised.
First line therapy is antiperspirants containing aluminium. These can often be irritant to the skin so should not be applied every day. These are best applied onto the affected area once the skin has be washed and dried thoroughly. Only a single roll should be made before thoroughly drying the area again. Dr Nelson suggests applying the type of treatment last thing at night when the excessive sweating has reduced using a hair drier before and after application. Repeated applications over 10 days can be very helpful even on tricky sites like the soles and palms.
If the sweating to too great for the above botulinum injections can be considered. These injections will completely block sweating at the site of injection. This type of treatment will need to be repeated every 4 to 6 months.
Generalised sweating can be more challenging to treat. Medication that manipulates that part of the nervous system thought to play a key role in the pathway of sweating can be tried but often side effects are too severe to continue treatment.