Silicea 200 CH (Diluted Pills)Silicea(Dilution) Common Name: Silica. Pure Flint Silicea is the chronic of Pulsatilla. Causes & Symptoms for Silica (Silicea) Silica promotes expulsion of foreign bodies from the tissues; fish bones, needles, bone splinters. It may cause the absorption of scar tissue, liberate the disease, hence used in the complaints of keloid. Inflammation, swelling and suppuration of glands, cervical, axillary, parotid, mammary, inguinal, sebaceous, is relieved