Synonyms for Troublesome problems:

• n.

  •can of worms (noun)
  • hornet's nest,
  • unpredictable situation,
  • complex problem,
  • complication,
  • quandary,
  • troublesome problem,
  • predicament,
  • problem,
  • dog's breakfast,
  • complexity,
  • trouble,
  • mare's nest,
  • snake pit,
  • mess,
  • difficulty,
  • headache,
  • quagmire,
  • snafu,
  • entanglement,
  • Gordian Knot,
  • difficult situation,
  • hard nut to crack,
  • hot water,
  • snarl,
  • Pandora's Box.