Viral Skin Infections (Warts and Herpes)

Key points

• • Warts are caused by the human papillomavirus, which makes the skin cells overgrow into rough, raised lumps.
• • Common warts appear on the hands, and verrucas are warts pressed flat on the soles of the feet, and many clear on their own.
• • Herpes simplex causes recurring painful blisters, as cold sores around the mouth (type 1) or genital herpes (type 2).
• • The herpes virus stays dormant in nerve roots and reactivates at times of stress, illness or sunlight.
• • Molluscum contagiosum, from a pox virus, gives small, dome-shaped, dimpled spots, common in children.