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Lei Tou Feng (Thunderhead Wind) refers to a condition characterized by nodular masses in the head accompanied by pain. Treatment involves first inducing vomiting with Chao San (Tea Powder), followed by purgation with Shen Xiong Wan (Divine Angelica Pill), and finally administering Xiao Feng San Re Tang (Wind-Dispersing Heat-Clearing Decoction). Another view states that Lei Tou Feng is caused by phlegm turbidity condensing into masses in the head, which lie dormant until triggered. Triggers include physical exertion, sexual excess, and consumption of roasted or wind-agitating, toxin-releasing foods. Upon onset, the head may become red or swollen, followed by pain. The patient experiences aversion to cold and high fever, resembling Taiyang disease (Taiyang Syndrome). In acute cases, treat the branch symptoms first; acupuncture to induce bleeding disperses wind and extinguishes fire, thereby alleviating pain. Li Dongyuan stated: This disease involves the Three Yang meridians, as all Yang meridians converge at the head. Cold-natured medicines should not be overused; instead, Qing Zhen Tang (Clear Thunder Decoction) is suitable. Lotus leaf is chosen for its green color and fragrant aroma, and its upward-curving shape symbolizes the Zhen trigram (Thunder), employing the method of analogical imagery.

The principle "excess conditions are treated by purgation" removes stagnant phlegm above the diaphragm, clears various heat syndromes, eliminates phlegm-fluids and food/wine stagnation, clears the head and eyes, unblocks the throat and chest, and resolves obstruction through dispersion and unblocking.
Da Huang (Rhubarb Root and Rhizome [Radix et Rhizoma Rhei], selecting those with brocade patterns) Huang Qin (Scutellaria Root [Radix Scutellariae], selecting those with hollow centers, each 2 liang) Qian Niu Zi (Pharbitis Seed [Semen Pharbitidis]) Hua Shi (Talcum [Talcum], each 4 liang). Grind into powder, form pills with water or honey, sized like adzuki beans. Take 10–15 pills with warm water, twice daily.

Gua Di (Melon Peduncle [Cucumeris Fructus Pedunculus]) Cha Ye (Tea Leaf [Camelliae Sinensis Folium]). Grind into powder, mix with vinegar juice, and take to induce vomiting.

Sheng Ma (Cimicifugae Rhizoma [Rhizoma Cimicifugae]) Cang Zhu (Atractylodis Rhizoma [Rhizoma Atractylodis]) Bo He (Menthae Haplocalycis Herba [Herba Menthae]. Grind into powder. Take 5 qian per dose, decoct in water until reduced to 70%. Burn one whole lotus leaf, grind finely, mix with the medicine, and take warm after meals.

It is also said: Previous discussions focused on nodular masses and used wind-dispersing herbs, interpreting "Zhen" as thunder. This understanding may be incomplete. This disease invariably stems from Phlegm-Fire. Phlegm generates heat; heat generates wind. Thus, nodules and masses have tangible forms. When Phlegm-Fire rises and obstructs the airway, combined with wind pathogenic factors, sound naturally occurs. Mild cases resemble cicada chirping; severe cases resemble thunder. It is named for its thunder-like sound or its rapid onset like lightning. If treated solely as Wind-Heat as previously described, one might mistake the branch for the root. Therefore, a formula for Phlegm-Fire is appended below.
Bai Jiang Can (Bombyx Batryticatus [Bombyx Batryticatus] 5 fen) Gan Cao (Licorice Root [Radix Glycyrrhizae] 2 qian) Ban Xia (Pinellia Tuber [Rhizoma Pinelliae], boiled with Zao Ren [Ziziphus Jujuba Seed] and Ginger Juice, 1 lian) Lian Qiao (Forsythiae Fructum [Fructus Forsythiae] 5 qian) Pian Huang Qin (Scutellaria Root [Radix Scutellariae] 7 qian, stir-fried with wine) Chen Pi (Citrus Reticulatae Pericarpium [Pericarpium Citri Reticulatae], white part removed, boiled with salt) Jie Geng (Platycodon Root [Radix Platycodonis], each 5 qian) Da Huang (Rhubarb Root and Rhizome [Radix et Rhizoma Rhei], steamed nine times with wine, 2 liang) Bo He Ye (Mint Leaf [Folium Menthae] 3 qian) Bai Zhi (Angelicae Dahuricae Radix [Radix Angelicae Dahuricae] 2 qian) Tian Ma (Gastrodia Rhizome [Rhizoma Gastrodiae] 5 qian, soaked in wine) Qing Meng Shi (Fluorite [Hematitum] 2 qian). Grind into powder, form pills using water-pelleting method, sized like mung beans. Swallow 2 qian with tea after meals and before sleep, until phlegm discharge is adequate. Subsequently, regulate with decoctions that clear phlegm and descend fire.

Head wind with white dandruff indicates Excessive Wind in the Liver Meridian. If stool is dry/hard, use Xie Qing Wan (Drain Green Pill); if deficiency exists, use Xiao Feng San (Wind-Dispersing Powder).
Externally, apply Shan Dou Gen (Sophorae Tonkinensis Radix et Rhizoma [Radix et Rhizoma Sophorae Tonkinensis]) soaked in oil, or mixed with milk.
Another formula uses equal parts of Bai Zhi (Angelicae Dahuricae Radix [Radix Angelicae Dahuricae]) and Ling Ling Xiang (Lysimachiae Herba [Herba Lysimachiae]), ground into powder, soaked in sesame oil, and applied. After three to five days, scrape off with a comb. After two or three treatments, it will never recur.