Actor and comedian Jeff Hiller has revealed the medical condition behind one of the distinctive features of his physical appearance.

The 48-year-old reached new levels of prominence as the best friend on the HBO series Somebody Somewhere starring Bridget Everett.

Demonstrating his range, he also played the villainous role of a serial killer targeting gay men on American Horror Story: NYC in 2022.

Now he has published a new memoir called Actress Of A Certain Age, with a whole chapter devoted to the question of why he has ‘no hair and no eyebrows.’

He disclosed that he suffers from frontal fibrosing alopecia, which occurs mainly in postmenopausal women and can result in eyebrow loss as well as a receding hairline at the front and sides of the patient’s scalp.

Jeff shared why he found that chapter to be the ‘hardest’ to write, and why he was surprised by the way people responded, via People.

Actor and comedian Jeff Hiller has revealed why exactly he has ‘no hair and no eyebrows,’ admitting: ‘I know I look weird’; pictured last week 

In the same chapter, he wrote about having patches of discolored skin brought on by the condition morphea, aka localized scleroderma.

Although he was bent on including a chapter about ‘morphea and having no hair or no eyebrows,’ he found himself taken aback by the reactions.

‘What’s funny is I thought everyone would be like: “Oh my God, you’re so brave for writing this,” and no one has even mentioned it,’ he dished.

Jeff also divulged that even his editor thought he might not ‘need’ to include the chapter in the book, which was published this Tuesday. 

‘When I first came out, it was really important for me to tell people I was gay, not because I thought they didn’t know, but because I thought they weren’t sure if I knew,’ explained the San Antonio native.

‘And I think I want to get out where I’m like: “I know I look weird, I’ve seen that you Googled it, I’ve talked to these hair and makeup people, I just want you to know I know it, too. So, if you’re talking behind my back, I know it.”‘

Although he found that chapter the ‘hardest’ to cobble together, he also noted: ‘People get uncomfortable when you say: “I know I’m not attractive,” but, also, that’s not really where I hold myself esteem.’

Jeff observed: ‘I’m not a young, hot movie star that needs to be f***able to get my next role. So it’s not that big of a deal. I know my hair looks weird.’

The 48-year-old reached new levels of prominence as the best friend on the HBO series Somebody Somewhere starring Bridget Everett (center)

Demonstrating his range, he also played the villainous role of a serial killer targeting gay men on American Horror Story: NYC in 2022

The memoir also contains reflections about growing up in Texas, where young Jeff found himself getting picked on over his homosexuality.

He found that portion ‘surprisingly difficult’ to get through, sharing: ‘I forgave myself a little bit by writing about that, and I have a lot of compassion for my younger self.’

Jeff continued: ‘When I look at my little fat kid self with my perm from my mom that she gave me in the kitchen, I feel a lot of compassion for myself.’ 

However not all the personal details of his life made it into the book, and he ‘left out a couple of things that I thought were maybe a little too much,’ he teased.