Adam Rainer is the only person in recorded history to have been both a dwarf and a giant
Adam Rainer was born in 1899 and up to the age of 21 was extremely small, thin and very weak. At the age of 19 Adam was medically tested to join the army, but he was too short and weak to do so. During this test his height was measured at 143cm (14'8.3"), which is a typical height for a dwarf, yet in 1920 an excessive growthspurt started (also known as giantism) and Adams height reached more than 233 cm.
Adam died in 1950 following multiple health complications caused by his sudden growth. By then he had reached a height of 7'8" (233.7 cm) or even 7'10" (238.8 cm) according to newspaper articles after his death.