Coal tar can be injurious to health. Coal tar is also used to manufacture paints, synthetic dyes (notably tartrazine/Yellow #5), and photographic materials. In the coal gas era, there were many companies in Britain whose business was to distill coal tar to separate the higher-value fractions, such as naphtha, creosote and pitch. A great many industrial chemicals were first isolated from coal tar during this time. These companies included: Side effects of coal tar products include skin irritation, sun sensitivity, allergic reactions, and skin discoloration. It is unclear if use during pregnancy is safe for the baby and use during breastfeeding is
Ancient Greek medicine Distinguishing between fatal diseases and recoverable disease was important for patient trust and respect, positively influencing patient compliance. With the growth of patient compliance in Greek medicine, consent became an important factor between the doctor and patient relationship. Presented with all the information concerning the patient's health, the patient makes the decision to accept treatment. Physician and patient responsibility is mentioned in the treatise , where it states, "there are three factors in the practice of medicine: the disease, the patient and the physician. The physician is the servant of science, and the patient must do what he can to