My sciatica is hurting and i now have a rash in my pubic area. what could this be from?

See below: The rash and sciatica are likely 2 separate problems. See your physician for a diagnosis and treatment.

See a doctor: Sciatica and rash might not be related. You might need to check to see if the rash in the pubic area might be herpes rash. Please see a doctor for evaluation.

Shingles?: Sciatica doesn't cause a rash. So if you have a rash you might have shingles. I would see your doctor to evaluate this.