It signfies the dilatation of deeper vessels to form cavernous spaces like those seen in the erectile tissue of the penis. The lesion is well-defined, purple in colour and elevated. The size is If2 to 2 inches in diameter. It swells up on crying and the cavernous spaces can be emptied by pressure. The naevus bleeds easily when injured;
it can become excoriated and secondarily infected. The most common sites are the face, the xalp, the upper extremities and the vulva. They increase in size in the first year or two, but a large majority of them tend to disappear spontaneously by the age of five, sometimes leaving faint atrophic scars, and at other times, none at all. A cavernous naevus, particularly if it occurs on the vulvar region, rarely becomes malignant. Management in strawberry stain is mostly inactivity and protection from injury and infection. The patient must be periodically observed. Only when the naevus tends to increase rapidly without any evidence of spontaneous regression, treatment should be given preferably after the first year of life. Carbondioxide for 10 to 20 seconds under pressure gives good results. Small naevi can be surgically excised. Good results have been reported with liquid nitrogen.