Electrocautery is a very effective treatment for seborrhoeic keratosis. This process uses electric current to cause thermal damage to ablate the lesions. This is usually done under topical or local anaesthesia.
Following the treatment, there will be superficial wounds with areas of scabs and crust. This will usually take about 1 to 2 weeks to drop off.
When the scabs have dropped off, the skin may heal with reddish or pigmented marks, but the this will gradually fade off over the next few weeks.