Tropical sores are a painful blistering skin condition caused by the herpes simplex virus. This infection is usually found in tropical and subtropical regions, hence the name. It is also known as fever blisters or cold sores and appears as a red, fluid-filled blister on the lips or around the mouth. There are several synonyms for tropical sore, including oral herpes, genital herpes, herpes simplex, and herpes labialis. Treatment options include antiviral medication, over-the-counter creams and ointments, and home remedies like ice packs and aloe vera. It is important to take steps to prevent the spread of the infection and practice good hygiene to avoid future outbreaks.