Seborrheic Keratosis is a non-cancerous skin growth and is more common as people age. Since this is a non-cancerous anomaly, then there will be no issues using the Theradome.
The only contraindication related to skin lesions and using the Theradome is if someone has verified cancerous lesion or melanoma. We have never tested or sought FDA clearance for known cancerous/melanoma lesions and usage of the Theradome and therefore we cannot recommend it either way.
Even though there are new laser-based products (non Theradome) specifically designed to treat cancerous lesions with red laser light with great success. But since we have not tested it ourselves we cannot endorse using it if you have a verified melanoma or cancerous growth. But again, Seborrheic keratosis is a non-cancerous lesion and not melanoma and you are free to use the Theradome with no issues.