Castor oil effectively treats ringworm (4), a common and stubborn skin problem across all age groups. The active compound called undecylenic acid, found in castor oil, helps treat ringworm successfully. Here is a step-by-step guide to its use. 1  Dilute 2 teaspoons of castor oil in 4 teaspoons of coconut oil.2  Alternatively, you can wash castor leaves in water and soak them in coconut oil for few hours, and then heat gently. 3  Apply over the affected area and cover with a cotton cloth.ere is a step-by-step guide to its use. 1  Dilute 2 teaspoons of castor oil in 4 teaspoons of coconut oil. 2  Alternatively, you can wash castor leaves in water and soak them in coconut oil for few hours, and then heat gently. 3  Apply over the affected area and cover with a cotton cloth.
Melena is a term that describes a particular appearance of blood in stools. This term describes stools that are black, tarry and often foul-smelling because of the presence of blood from the upper gastrointestinal tract.elena may be caused by hemorrhoids. Eating blueberries may cause the appearance of red stools. Eating tomatoes may cause the appearance of bloody stools. Eating beets may cause the appearance of bloody stools.
Melanin pigment (light refracting granular materialâcenter of image) in a pigmented melanoma. Melanin /ËmÉlÉnÉªn/ (Greek: Î¼Î­Î»Î±Ï â melas, black, dark) is a broad term for a group of natural pigments found in most organisms. Melanin is produced by the oxidation of the amino acid tyrosine, followed by polymerization. The pigment is produced in a specialized group of cells known as melanocytes.