Can sciatica cause sweaty feet?

No. Sciatic nerve is not related ot sweating. The skin glands and the autonomic nervous system is

Need to resolve sciatica. Have Dr check for a limb length difference or pelvic rotation. Very common with sciatica

Sciatica signifies irritation of the sciatic nerve either in the lumbosacral cistern or far less commonly, the peripheral buttock area, almost always due to compression. Symptoms start with pain, and include numbness, weakness, and occasionally difficulty urinating. Autonomic problems with perspiration would not be a typical accompaniment.