“In a year’s time, I might not be able to play,” Frampton told Rolling Stone, adding, “I want to record as much as I can in the shortest space of time.”

A publicist for Frampton said he could not be reached Saturday evening.

Frampton became the lead singer and guitarist for the Herd at 16, and two years later co-founded Humble Pie. His popularity in the United States skyrocketed after the 1976 release of “Frampton Comes Alive!,” a double album that has sold more than 17 million copies. It features songs like “Baby, I Love Your Way” and “Show Me the Way.”

Frampton did not always receive the critics’ praise, but he has played on albums by George Harrison and David Bowie, and in the 1970s he helped popularize the talk box, a device that creates the effect of a “talking” musical instrument. The Musicians Hall of Fame, which inducted Frampton in 2014, has called him “one of the most celebrated artists and guitarists in rock history.”

Frampton recounted to Rolling Stone a series of warning signs regarding his health: He noticed tightness in his ankles about eight years ago, and there were times his legs felt weak; four years ago, he fell while trying to kick a beach ball off a concert stage; shortly after, he tripped over a guitar cord onstage; and he could not easily put things in overhead compartments on airplanes.

Frampton told Rolling Stone that for four years, his children and his band knew about his diagnosis, but that he did not tell anybody else. He said that there was no traditional medicine to treat inclusion body myositis, but that he was exercising every day and hoped to participate in future drug trials.