S: WHO – http://www.who.int/vaccine_safety/initiative/tools/BCG_Vaccine_rates_information_sheet.pdf (last access: 13 November 2014); DORLAND.
N:1. From Latin papula “pustule, pimple, swelling”, related: papular.
2. Area of abnormal skin tissue that is less than 1 centimeter around. A papule has distinct borders, and it can appear in a variety of shapes. Papules are often called skin lesions, which are essentially changes in the color or texture of your skin. Oftentimes, papules cluster together to form a rash.In most cases, papules are not serious and can be relieved with home treatments. However, if the papules appear soon after you start a new medication, consult your doctor immediately. Also, if you suspect the papule is from a tick bite, you may want to consult your doctor, as ticks can carry Lyme disease. Papules can be caused by a number of conditions that affect the skin, but dermatitis, chickenpox, and eczema are among the most common.
3. Papules are usually small, only getting to be about the width of your fingernail. Your papule may have a dome shape or it may be flat on the top. Your papule may even be umbilicated, meaning it has a small impression that looks like a navel.
4. A small, superficial, circumscribed, solid elevation of the skin, not larger than a few millimetres in diameter.
Papule may be acuminate, flat, or obtuse.
S: 1. OED – http://www.etymonline.com/index.php?allowed_in_frame=0&search=papule&searchmode=none (last access: 13 November 2014). 2 & 3. Healthline Reference Library – http://www.healthline.com/symptom/papule (last access: 13 November 2014). 4. TERMIUM PLUS (last access: 13 November 2014).