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September 12, 2026Short & citedBlog
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People File • Medical Condition

Rocky Dennis

Rocky Dennis was the nickname of Roy Lee Dennis, an American teenager born in California in 1961 who had craniodiaphyseal dysplasia, an extremely rare bone disorder.

Updated September 12, 20261 min readCited sources

Rocky Dennis was the nickname of Roy Lee Dennis, an American teenager born in California in 1961 who had craniodiaphyseal dysplasia. His life later inspired the 1985 drama film *Mask*.

Early life

Roy Lee Dennis was born in California on December 4, 1961, and became known as Rocky Dennis. Secondary sources describe him as an American teenager whose childhood was shaped by a rare medical condition.

Medical condition

Dennis had craniodiaphyseal dysplasia, an extremely rare sclerotic bone disorder that causes abnormal skull thickening and can compress the brain. The condition was associated with serious neurological and developmental complications.

Legacy

Dennis died on October 4, 1978, at age 16; official cause of death was sudden arrhythmic death syndrome. His life became the basis for the 1985 film *Mask*, bringing wider public attention to craniodiaphyseal dysplasia.

In short

  • Rocky Dennis had craniodiaphyseal dysplasia, a very rare bone disorder.
  • He lived to age 16, longer than early medical expectations.
  • His life inspired the 1985 film *Mask*.
  • Official cause of death was sudden arrhythmic death syndrome.

Quick questions

Who was Rocky Dennis?
Rocky Dennis was the nickname of Roy Lee Dennis, an American teenager born in 1961 who had craniodiaphyseal dysplasia.
What condition did Rocky Dennis have?
He had craniodiaphyseal dysplasia, an extremely rare sclerotic bone disorder that causes abnormal skull thickening.
What film was inspired by Rocky Dennis's life?
His life inspired the 1985 drama film *Mask*.

Sources

  1. Wikipediahttps://en.wikipedia.org/wiki/Roy_L._Dennis
    Supports: Birth name, nickname, dates, condition, death, and inspiration for the film *Mask*.
  2. All That's Interestinghttps://allthatsinteresting.com/rocky-dennis
    Supports: Background on Rocky Dennis, his condition, and the film connection.