Natrum Sulphuricum
1. Hydrogenoid constitutions ; subjects with sycotic history. 2. Depression ; lively music saddens ; satiety of life ; irritability, especially when spoken to ; inability to think. 3. Mental traumatism ; mental effects of blow on the head, etc. 4. Catarrhs of mucous membranes with free discharge of greenish-yellow muco-pus ; sometimes bloody. 5.