"constant visits" is a correct and usable phrase in written English.
You can use it when referring to visits that happen regularly and frequently. For example, "The constant visits from family and friends have made her hospital stay much more bearable."
Others made light of the constant visits from the United States.
They also appeal to second-home owners who want to avoid constant visits to the construction site.
Behind, the riders made constant visits to their team support cars for drinks and they grabbed bottles off the spectators.
Growing up, the son says, the constant visits by strangers who mistook the place for a store seemed normal.
After all, she had constant visits from friends and family members, not to mention an army of medical experts who were all trying, in vain, to cure her.
Mr. Weston works, Mr. Knightley manages his estates and goes to London for business, but all of these people pay each other constant visits.
That same person undertakes a constant visiting cycle of the health services.
Constant hospital visits with one thing or another, crying all the time.
Much more than a conscientious civil servant, John Hurst made a total commitment to his subject with constant travel, visits to excavations and sites, and meetings with scholars.
Maybe less frequent blood testing is worth the greater freedom, untethering an older person from constant clinic visits, even if that means less stringent monitoring.
Despite the constant star visits and red carpet events in Las Vegas, few if any images of pantyless pop stars, married actors getting lap dances or even paparazzi mobs chasing celebutantes into limousines have appeared online or in publications.
