Wendy Williams has some good and some bad days … but people shouldn’t assume she’s fine just because she calls into an interview show — so says her lawyer.

We spoke with Roberta Kaplan, Wendy’s attorney, who tells us … Wendy’s dealing with frontal lobe dementia — a neurological disease with no cure.

Because of this, Roberta explains, a state court found her unable to make legal and financial decision on her own … and, because of the degenerative nature of the disease, she will require care for the remainder of her life.

That said, Wendy doesn’t have 365 bad days a year … some days are good, and she has a lot of clarity — which is why she sounded totally normal when she called into “The Breakfast Club” this morning.

FEELING LOCKED AWAY

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ICYMI … Wendy went on the show Thursday and vented about her life — saying she felt she was in prison and straight-up calling her life “f***ed up.”

Wendy mostly blasts Sabrina Morrissey — her conservator — during the call. Roberta Kaplan is only representing Wendy in her lawsuit against A&E for producing the documentary “Where Is Wendy Williams?”

Williams made several other claims too — alleging she can’t receive phone calls from loved ones, and her only consistent interactions with people are when “nursemaids” give her pills.

Wendy Williams Through The Years Launch Gallery

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Wendy’s niece, Alex, claims she’s not actually impaired … and, tells her fans to get #FreeWendy trending to help her aunt.

But, Roberta Kaplan says otherwise … and, she’s telling fans not to let Wendy’s enthusiasm fool them. Due to a guardianship court order, Sabrina Morrissey is prohibited from commenting on this story.