Symptoms of<unk>  occur when exposed to heat, and include: * fatigue * pain * concentration difficulties * urinary urgency * worsen of existing optic neuropathy (although optic neuropathy may occur for the first time) * muscle stiffness * dizziness and unsteadiness
Uhthoff's phenomenon
Lucio's phenomenon
Bell's phenomenon
Renbök phenomenon
Kohnstamm's phenomenon
Jod-Basedow phenomenon
Tullio phenomenon
Waddell's signs