Cast notes: Never Fear was the first directorial credit for actress Ida Lupino, although an item in The New York Times reported that Frank Cavett was originally intended to direct.

[1] Lupino had contracted polio in 1934 and suffered the same fevers and pains as does the Carol Williams character, and she also faced the same dark thoughts and fear that she would not walk again.

She remained a supporter of causes to fight the disease, and Never Fear was released in 1949, the year with America's highest-ever recorded total of polio cases.

[1] The film was not popular because of its subject matter and did not turn a profit for The Filmakers, Lupino's and Young's production company.

[citation needed] A Variety review stated: "As written by Ida Lupino and Collier Young, the screenplay was psychologically sound in dealing with the emotional ups and downs of polio victims, and it is equally convincing as a documentary of treatment with effective shots of physical therapy.