Glossary
Idiopathic: Unknown cause.Contagious: Spread of diseases from person to person.
Neutrophils: The larger and physiologically most numerous class of infection-fighting white blood cells, characteristically even more numerous in generalized bacterial infections.
Nodule: Raised tender lumps of skin, which are pink, purple or red in color and larger than half an inch.
Plaque: Many nodules together form larger areas called plaques.
