An acute inflammatory disease, characterized by the formation of pin-head to pea-sized vesicles, arranged in groups, and occurring for the most part about the face and genitalia.
Describe the symptoms of herpes simplex.
In severe cases, malaise and pyrexia may precede the eruption, but usually it appears without any precursory or constitutional symptoms. A feeling of heat and burning in the parts is often complained of. The vesicles, which are commonly pin-head in size, are usually upon a hyperæmic or inflammatory base, and tend to occur in groups or clusters. Their contents are usually clear, subsequently becoming more or less milky or puriform. There is no tendency to spontaneous rupture, but should they be broken a superficial excoriation results. In a short time they dry to crusts which soon fall off, leaving no permanent trace.
Is the eruption in herpes simplex abundant?
No. As a rule not more than one or two clusters or groups are observed.
Upon what parts does the eruption occur?
Usually about the face (herpes facialis), and most frequently about the lips (herpes labialis); on the genitalia (herpes progenitalis), the lesions are commonly found on the prepuce (herpes præputialis) in the male, and on the labia minora and labia majora in the female.
State the causes of herpes simplex.
Herpes facialis is often observed in association with colds and febrile and lung diseases. Malaria, digestive disturbance, and nervous disorders are not infrequently predisposing factors. Herpes progenitalis is said to occur more frequently in those who have previously had some venereal disease, especially gonorrhœa, but this is questionable. It is probably often purely neurotic.
What are the diagnostic points?