erupt - verb

• start abruptly
• erupt or intensify suddenly
• start to burn or burst into flames
• break out
• become active and spew forth lava and rocks
• force out or release suddenly and often violently something pent up
• appear on the skin
• become raw or open

erupt - thesaurus

belch   break   burst   combust   conflagrate   extravasate   flare   ignite   irrupt   recrudesce