Excessive perspiration or excessive sweat is becoming a popular topic among many Canadians. Doctors practice Botox injections to treat this condition, and the results are remarkable. Patients have the confidence and improve their self esteem to go out in warmer weather without having to worry about perspiring excessively. Although this may not be a permanent solution to a patient�s hyperhidrosis but each course of injections is able to last for up to seven months.