Thunder God Vine Root Classic Formulas … Natural Herb Library

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Dispels wind-damp and relieves severe painful obstruction ... Lei Gong Teng is used in modern Chinese practice for swollen, inflamed, and deeply fixed joint pain when ordinary damp-heat or bi herbs are not enough.
Reduces swelling and resolves toxic inflammation ... traditional and contemporary use extends to inflammatory skin disease, nodular swelling, and stubborn autoimmune-type patterns.
Strongly suppresses excess inflammatory reactivity ... this herb belongs to the narrow class of powerful toxic medicinals whose therapeutic attraction and danger are inseparable.

Modern Tripterygium-glycoside tablet practice ... especially in rheumatoid and autoimmune settings where supervised use is pursued despite major toxicity concerns.
Severe damp-heat bi combinations with Fang Ji, Yi Yi Ren, or Qin Jiao logic ... used when hot swollen joints dominate.
Inflammatory skin and swelling patterns in contemporary hospital-style Chinese herbal practice rather than in simple classical folk use.

Lei Gong Teng sits at the boundary between traditional materia medica and modern specialist use because it is effective enough to remain important while toxic enough to demand unusually strict caution.
Its best-known modern niche is inflammatory and autoimmune disease, especially rheumatoid arthritis.