Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Shedding All of a Sudden? 8 Vet-Reviewed Reasons

Share

Persian cat and a pile of shedded cat hair

When it seems like your cat’s fur is coming out in clumps or you’re finding little fluffy tumbleweeds everywhere all of a sudden, it can be worrisome. In most cases, shedding is just part of being a cat. It’s a natural process—especially when the weather starts to get warmer—that helps them get rid of dead hair and grow new, healthy hair in its place.

That said, in some cases, shedding is caused by something abnormal, like a medical condition, poor diet, or stress. A check-up at the vet is advised if the shedding is combined with other signs. In this post, we’ll explore eight possible reasons why your cat may be shedding like crazy all of a sudden.

divider cat faces 2 oct 2024

The 8 Possible Reasons Your Cat Is Shedding All of a Sudden

1. It’s Shedding Season

Cats typically shed in spring and fall, and though it may seem like they’re losing a huge amount of fur, seasonal shedding is nothing to be concerned about. Shedding takes place in spring to thin out the winter coat and prepare your cat for the hot summer weather. Fall shedding helps get your cat ready to grow a new, thick winter coat.

You can give your cat (and your overworked vacuum) a helping hand in shedding season by brushing them regularly to loosen dead hairs and get rid of them faster.


2. You’ve Got a Heavy-Shedding Breed

Though all cats shed to some extent, some breeds are heavier shedders. Ragdolls, Maine Coons, and American Bobtails make up a few of the heaviest-shedding cat breeds. Therefore, it’s not uncommon for these types of cats to shed even larger clumps of hair than other breeds.

hand holding shedded cat hair
Image Credit: Doucefleur, Shutterstock

3. Your Cat Is Stressed Out

Stress and anxiety can cause your cat to shed more than usual. In addition, stressed and anxious cats sometimes over groom as a way to soothe themselves, so if your cat is losing more hair than usual or you spot bald patches, this might be the cause.

Other signs of anxiety to watch out for are generally poor coat condition, odd bathroom habits like urinating outside the box, diarrhea, vomiting, hiding, or asking for more attention.


4. Your Cat Has Allergies

white cat shedding
Image Credit: DreamBig, Shutterstock

Skin allergies are another reason why your cat might be shedding all of a sudden. Discomfort, itchiness, hair loss, scabbing, and sores are other giveaway signs of an allergic skin disease. Skin allergies can be caused by several things, including irritants inside or outside of the house, reacting badly to a certain type of food, and being allergic to or getting bitten by fleas.


5. Your Cat Is a Senior

Older cats can be a little more lax than they used to be when it comes to grooming themselves. In most cases, it’s because it’s more difficult for them to do so. This can result in a build-up of dead fur and matting if they’re not brushed regularly. Get your vet to give them a check-over in case there are signs of arthritis or dental problems.


6. Your Cat Has a Medical Condition

Certain medical conditions like hyperthyroidism and parasites can cause cats to lose a lot more hair than usual. Alopecia can be caused by a variety of factors, including overgrooming due to stress and skin conditions. Specific skin conditions that may exacerbate hair loss are scabies, ringworm, and feline eosinophilic granuloma complex.

There are a lot of medical conditions that have the potential to cause excessive hair loss, so always check with your vet if you suspect a health issue is at play.


7. Your Cat’s Diet Is Poor

American shorthair cat eating
Image Credit: Apicha Bas, Shutterstock

Poor nutrition is also a cause of excessive hair loss in cats. If your cat doesn’t eat a quality balanced and complete diet with all the nutrients they need to stay healthy, it can affect their coat and skin condition drastically. Certain nutritional deficiencies, such as zinc deficiency, can also cause hair loss.


8. Kittens Are on the Way

It’s not uncommon for pregnant cats to shed more due to hormone changes. This can also happen when they’re nursing or just after they’ve given birth. We recommend having a chat with your vet to find out how you can make sure your pregnant cat is eating the right foods to support healthy skin and coat.

divider cat paws oct 2024

Final Thoughts

To sum up, shedding is a natural occurrence in every cat, but some cats shed more than others for various reasons. Sometimes, it is down to their breed and having an undercoat to shed, whereas in other cases, a health condition, like allergies, alopecia, or a skin infection, may be causing hair loss.

If your cat is shedding to the point where it’s starting to worry you or you’ve noticed bald patches or excessive grooming of late, talk to your vet to make sure your cat isn’t suffering from anxiety or another health issue.


Featured Image Credit: DreamBig, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

Can Cats Eat Mac & Cheese? Vet-Reviewed Info to Know!

Most cats love cheese, and when this feline favorite is mixed in with a bit of butter, milk, and pasta, it becomes the...

Can Cats Eat Pine Nuts? Vet-Reviewed Facts & FAQ

There are many safe and unsafe human foods that you could feed your cat. For humans, nuts are famous for their health benefits....

Compressed Catnip Balls: What They Are & Our Top Picks in 2026

Catnip (Nepeta cataria) and felines go together like peas and carrots. Their unique response to this perennial herb is a spectacle to see,...

Catster Photo Contest: Cats of the Week Winners (August 14, 2025)

Every week our team gets the privilege of sorting through our readers photos to choose what cats will win this weeks contest! See...

Keep reading

What Is the Difference Between Cat & Human CBD Oil? Vet-Verified Facts & Safety Guide

With increasing reports and testimonials, CBD is often discussed for potential use in anxiety, nausea, depression, pain, and more. With significantly more research available on human CBD, you may be wondering what the differences between CBD for humans and CBD...

maine-coon-cat-lying-near-CBD-oil

How to Keep Cats Out of Mulch: 12 Vet-Reviewed Tips

Neighborhood cats roaming around our yards is not something everyone enjoys. They are generally harmless, but they may visit you often, particularly if there is any food left outside, or they can get into fights with your cats. And if...

turkish-angora-cat-in-the-garden

Why Do People Hate Cats? What Science Tells Us (Vet-Reviewed)

Cat lovers think that their favorite animals can generally do no wrong. People who adore felines often find them loving, attentive, playful, and adaptable. They love cats’ independence and sweet companionship and feel honored that such self-sufficient and intelligent creatures...

red flame point siamese in the grass

How Long Does a Scottish Fold Live? Average Lifespan Data & Vet-Reviewed Facts

Scottish Folds are renowned for their adorably unique appearance resulting from their flat-folded ears, big eyes, and friendly round faces. They are affectionate, easy-going cats that form a loving bond with their owners. However, this breed is not without its...

scottish fold kitten on mirror and wooden texture

16 Fruits & Vegetables That Cats Can Eat: Vet-Reviewed Facts & Tips

Cats are obligate carnivores by nature, so as long as their diets are well-balanced, like they would be in the wild, they don’t require any fruits or vegetables to stay happy and healthy. Still, there are fruits and veggies that...

Fruits & Vegetables That Cats Can Eat NEW

7 Best Pellet & Pine Cat Litters in 2026 – Reviews & Top Picks

Being a cat owner can be one of the most rewarding experiences for us humans, but one of the distinct disadvantages is dealing with the litter box. Part of the unpleasantness of litter boxes is the rather pungent odor of...

wood-pellet-cat-litter

How to Cut Pills Easily & Accurately for Your Cat: Vet-Verified Tips

If you’ve ever given a pill to your cat, you know how challenging it can be. There are several reasons you may want to cut a pill for a cat. It may be easier to get your cat to take...

young woman giving cat a tablet pill

Are Tomato Plants Toxic to Cats? Vet-Reviewed Houseplants Examined

There’s nothing more exciting than welcoming a new cat into your life. Having a pet involves taking good care of it and buying the proper cat food, plenty of kitty litter, and some toys. If you plan on allowing your...

Catster_Are Tomato Plants Toxic to Cats

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.