Dave Coulier, the beloved star of Full House, opens up about his challenging journey with chemotherapy, describing it as a 'roller coaster ride' filled with various symptoms.

Dave Coulier said he has been experiencing a "roller coaster" of symptoms as he undergoes chemotherapy after being diagnosed with stage 3 non-Hodgkin lymphoma.

The Full House star, 65, revealed his diagnosis in November, months after first noticing the symptoms when he was sick with a cold, and then spotted a large lump in his groin. This week, he gave an update on his treatment, which he said is "going well" even though his hair has not grown back yet.

During Friday's episode of his podcast "Full House Rewind", Dave told co-host Marla Sokoloff, "I realize how much that hair keeps you warm. Gets a little cold here in Michigan where I'm at." He also joked it will be nice in the summer to have "a little air conditioning on your head" before saying he was excited to have his hair grow back.

The actor shared that his experience with chemotherapy for cancer has felt like a "roller coaster ride" filled with "varied effects." He explained, "For those watching or listening who have been through this, you understand it’s a wild ride, as the side effects can lead to even more side effects. Then you take another medication to manage those, and it just continues." He characterized the treatment as a "perpetual mix that keeps your body in a state of fight or flight," adding, "It's somewhat of an ongoing internal struggle."

In November, Dave recounted the instant he recognized something was amiss, stating, "It blew up right away. I thought to myself, 'This is either a serious illness, or my body is having a strong reaction to something.'" He shared his feelings upon receiving the diagnosis, recalling, "The first words out of my mouth were, 'Hold on — cancer?' I felt as if I'd been hit in the gut because you never think it could happen to you. You always hear about it affecting other people."

Dave, who had mentioned he anticipated completing his chemotherapy by February, shared, "Hearing the word chemo can be terrifying. The first session was overwhelming since you have no idea what to anticipate. You wonder how you'll react. Will the effects hit me right away? Will it be severe? Am I going to be able to leave this place?"

Dave expressed his gratitude for the unwavering support of his wife, Melissa Bring, whom he has been married to for a decade. He noted that she, along with his close friends in the medical profession, rallied around him to face his diagnosis directly. Dave shared his hope that by sharing his experience, he can encourage others to seek early testing.

The actor also said he wanted to inform his Full House co-stars of his diagnosis before the news spread to the public, so he sent them all a group message. He told People that the cast was immediately supportive of him, giving on outpouring of kindness. He explained, "It was just this outpouring of, 'I will be there. You just name the time, and I know you're in great hands with Mel, but what can we do?' It really is overwhelming the love that we have for each other. We've been there for so many years for each other and it's pretty remarkable."