Ulnar nerve entrapment: ulnar nerve in the arm is compressed or irritated

  • Symptoms: aching feeling on the inside of the forearm, tingling and numbness in the forearm, weakening of grip, difficulty with finger coordination
  • Causes: keeping the elbow bent for a long time, repeatedly bending the elbow, fluid buildup, direct blow to the inside of the elbow

Compartment syndrome: an enclosed bundle of muscle bleeds or swells

  • Symptoms: tingling or burning feeling in the skin when the forearm is stretched, tight-feeling muscles, cramping during exercise, difficulty moving the arm, muscle bulging
  • Causes: sudden blow to the arm, repetitive motion