The phrase "a constant problem and" is correct and usable in written English.
It can be used when discussing an ongoing issue or challenge that persists over time, often leading into further explanation or examples.
Example: "The lack of funding has been a constant problem and has hindered our progress on the project."
Alternatives: "an ongoing issue and" or "a persistent challenge and".
If flies are a constant problem, start practicing your aim and stealth (and clean up and shut your windows and doors).
The lack of electricity, especially through the infernally hot summer months, is a constant problem for the government and a reason for repeated strikes and public protests throughout Pakistan, even in ordinary times.
Although Natasha and society members agreed lad culture was a constant problem, they praised Royal Holloway and the Student Union for its positive actions, such as sexual consent workshops and the recent Reclaim Your Campus campaign.
Ensuring that sufficient blood is donated to hospitals is a constant problem for medical services and any new source is to be welcomed, doctors acknowledged.
Plant closings have been a constant problem in the 1980's, and the union's membership has dropped by more than a third, from 1.5 million to slightly under a million.
Ask for a return ticket, or if the theater is a constant problem, insist on a refund and tell management that until they correct their staffing issue and place an usher in each theater for at least the first 15 minutes of each film, you will not be returning there.
Low blood pressure is a constant problem for people with spinal injuries and I suffer more than most.
Serious cramping had been a constant problem for years, mostly happening suddenly -- and painfully -- at night.
"It was a constant problem, but Lindsay was extremely positive and committed to the project.
The program has relieved the need for foster families to take in puppies and train them, a constant problem since Neads was established in 1976.
