 [ Symptoms ] i have chronic constipation my dad wants me to try castor oil is this something i should do [ Disease ] herpes would not be high on a diagnostic list based on what you have described while it would be impossible to blindly offer you a definitive answer without examining you more likely possibilities would include chaffing like you mentioned or a fungal skin infection tinea cruris also known as jock itch    a common skin condition that occurs in warm dark moist skin areas you would need to see a medical provider if this condition persists or worsens this is really the only way to be properly diagnosed and treated