The purpose of this study is to determine if antiseizure drugs affect hormone levels and sexual function in men with seizures.

This study involves donating two small tubes of blood for hormonal testing, which will be drawn at the same time as your routine blood draw for the monitoring of your antiseizure medication. You will also be asked to fill out a short confidential questionnaire regarding your sexual interest and function.

Inclusion Criteria:

• Must be a male between 18-50 years of age
• Must have seizures
• Must be on antiseizure medication for at least six months duration

Exclusion Criteria:

• Must not have taken hormones, major tranquilizers or antidepressants for at least 3 months