Trifolium pratense

Produces most marked ptyalism. Feeling of fullness with congestion of salivary glands, followed by increased copious flow of saliva. Feeling as if mumps were coming on. Crusta lactea; dry, scaly crusts. Stiff neck. Cancerous diathesis.
Head: Confusion and headache on awaking. Dullness in anterior brain. Mental failure, loss of memory.
Mouth: Increased flow of saliva (Merc; Syphil). Sore throat, with hoarseness.
Respiratory: Coryza like that which precedes hay-fever; thin mucus, with much irritation. Hoarse and choking; chills with cough at night. Cough on coming into the open air. Hay-fever. Spasmodic cough; whooping cough, paroxysms; worse at night.
Back: Neck stiff; cramp in sterno-cleido muscles; relieved by heat and irritation.
Extremities: Tingling in palms. Hands and feet cold. Tibial ulcers.