John Stamos' wife, Caitlin McHugh, is sharing a message of support for Dave Coulier amid his cancer battle. "While I do love how you use your experiences to help others, I sure hope God/the universe gives you a well-deserved break from it in the new year. ❤️❤️," McHugh, 39, wrote in the comments section of Today's Instagram post on Tuesday, December 2. Stamos, 62, reshared the clip via his own Instagram Story on Tuesday, writing, "My man!!!" Earlier on Tuesday, Coulier, 66, shared during an appearance on the Today show that he has been diagnosed with early stage P16 carcinoma - also known as oropharyngeal tongue cancer - less than one year after battling non-Hodgkin lymphoma. Dave Coulier's Cancer Battle in His Own Words: From His Diagnosis to Now "To go through chemotherapy and feel that relief of, 'Whoa, it's gone,' and then to get a test that says, 'Well now you've got another kind of cancer.' ... It is a shock to the system," he said, explaining that he was diagnosed with HPV-related oropharyngeal tongue cancer in October. Coulier, who starred on Full House alongside Stamos, noted that he didn't have any symptoms before the discovery during a follow-up scan confirmed the diagnosis. "It was a really tough year, chemotherapy was grueling," Coulier said. "A couple of months ago, I had a PET scan, and something flared on the scan. The doctor said, 'We don't know what it is, but there's something at the base of your tongue.'" Coulier had a biopsy and the doctor later confirmed the news. "It was very painful. It's like if you bit your tongue, but the pain just lasted every single day," he explained. "They said it's totally unrelated to my non-Hodgkin's lymphoma. This is a new cancer. ... I said, 'Are you kidding me?'" Dave Coulier Group Texted 'Full House' Costars About His Cancer Diagnosis According to the American Cancer Society, P16-positive cancer is caused by an infection with HPV-16. The National Cancer Institute explained that HPV-16 is transmitted sexually and a long-lasting infection can cause changes in the cells that can become cancer. "They said it could stem from having an HPV virus up to 30 years ago. A lot of people carry the HPV virus, but they said mine activated and turned into a carcinoma," Coulier explained. "We found it early enough where it's very treatable. ... It's got a 90 percent curability rate." Coulier's medical team shared that "the prognosis is good" and he is starting radiation immediately. Coulier explained that the radiation therapy entails 35 total treatments for five days a week until the end of the year. "It's a whole different animal than chemo. It doesn't feel as aggressive, but there are still side effects," he said of symptoms, which included nausea, "radiation brain" and pain on the left side of his face and tongue. "That's not 100 percent healed yet." He continued, "My joke usually is ... I'm doing really well for a guy with cancer. I get to start the new year saying, 'I finished radiation yesterday!' It's kind of serendipitous."