Area of potential unrest

• Place of significant danger

Wikipedia Word definitions in Wikipedia
In veterinary medicine , a " hot spot " (or acute pyoderma , acute moist pyotraumatic dermatitis ( AMPD )) is one of the many names for a raw, painful, irritated skin lesion that results in and worsens from a pet (such as a dog or a cat) constantly biting, ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
also hotspot , 1888 as a skin irritation; 1931 as "nightclub;" 1938 in the firefighting sense; 1941 as "place of international conflict." See hot (adj.) + spot (n.).

Wiktionary Word definitions in Wiktionary
alt. 1 A place notable for a high level of activity or danger; ''specifically'': 2 # A dangerous place of violent political unrest 3 # An area of radioactive contamination 4 # A lively and entertaining place, such as a nightclub 5 (context computing English) ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Occasionally a hot spot would erupt and an orange halo would expand into the night. ▪ The surge capability is needed because carriers are often the first to arrive at a hot spot , the admiral said.