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

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.

If you are looking for recommendations on the best cat brush, you should check out Hepper Cat Brush. You will hardly find different brush with so many pros - easy to clean, easy to use, durable and effective. Simply everything you need from a cat brush. Click here to order yours today.

Hepper Deshedding Cat Brush
  • ONE PUSH RELEASE - This kitten brush / cat brush pops out fur with just a simple press, leaving you...
  • DURABLE - Cat shedding can be a tough ordeal. Made of resilient ABS plastic and metal bristles with...
  • COMFORTABLE - A cat fur brush with 60 degree angled, fine bristles and rubber stoppers will bring...

At Catster, we’ve admired Hepper for many years and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool cat company!


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.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money


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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

9 Best Cat Repellents, Sprays & Deterrents in 2026 — Reviews & Top Picks

You love your cat, but that does not mean they don’t get on your nerves sometimes. Cats are notorious for getting into or...

Why Do Cats Rub Their Faces on You? 3 Vet-Reviewed Reasons

A cat rubbing their face on you is one of the highest compliments you can receive from your furball, and it’s seriously adorable...

Can You Put a Cat on a Leash? Is It Cruel? Vet Approved Facts, Pros & Cons

Our feline friends love to explore, and some inside kitties yearn to explore the great outdoors. However, it’s not always wise to open...

The 6 Best Online Vet Services for UK Pet Owners in 2026 – Reviews & Top Picks

Veterinary care in the UK has evolved dramatically in recent years. The rise of telemedicine has transformed how pet owners access professional advice,...

More related

Blue Bengal: Info, Pictures, Origin & History

Bengal cats are hybrids of the Asian Leopard Cat and domestic cats. They have the beauty and look of a wild cat with...

10 Vet-Approved Tips for Keeping Your Cat Safe Over the Holidays

The holidays may be a magical and fun time for humans, but there are a lot of dangers that the holiday season brings...

150 Cat Names That Start with E for Your Furry Friend

When you welcome a new cat into your life, it can be tricky to find a name that fits them. Cat owners are...

Why Does Cat Pee Smell So Bad? 6 Vet Reviewed Reasons & Recommendations

If you own a cat, you’re intimately aware of how much their urine can smell. Dealing with a stinky litter box day in...

Keep reading

Is Bamboo Toxic to Cats? Vet-Verified Facts, Risks & FAQ

True bamboo is a subfamily called Bambusoideae. This is considered a safe plant to keep or grow around pets, including cats and dogs. However, several other plants and flowers contain the word bamboo but are not bamboo at all. Some,...

Catster_Is Bamboo Toxic to Cats

Can Cats Eat Chicken Nuggets? Vet-Verified Facts & FAQ

Picture this: You’re eating some dinner one night, and your furry friends gather around you. Those sweet eyes are hard to resist, but you wonder if it’s safe to feed them human food. What should you do? Well, it depends...

Can Cats Eat Chicken Nuggets

My Cat Has a Front Paw Limp, What’s Wrong? Vet Approved Advice

When you notice your cat limping or favoring a certain leg, it can trigger your alarm bells. The good news is that, in many cases, a limp is often temporary and may resolve on its own. In other cases, it...

cat sitting in park with one front leg lifted up

Can Cats Eat Dragonflies? Vet Approved Facts & FAQ

Cats love to chase things, especially things that fly quickly. It is one reason why so many birds die due to domestic cats every year (which can actually become a serious problem in some areas). Dragonflies are another animal that...

Can Cats Eat Dragonflies

Can Cats Eat Cheetos? Vet Approved Nutrition Facts & FAQ

We’ve all seen the Cheetos commercials with a cartoon jaguar. He’s technically a cat, so can cats eat Cheetos? Truthfully, even humans probably shouldn’t even eat Cheetos. They are chock-full of preservatives, artificial dyes, and harmful additives. The same sentiment...

Can Cats Eat Cheetos

How to Give a Cat a Head Massage: 4 Vet-Reviewed Tips & Benefits

You wouldn’t think giving a cat a head massage would be something your feline would like, but you would be surprised. While not all cats are receptive to being massaged, for some, it helps them to relax, calm down after...

Cat Massage

Sudden Death in Cats: 10 Vet-Verified Causes

Sudden death in cats is a tragic event that often occurs without any warning. There are many possible causes of sudden death in cats, although some preventative steps can be taken to help avert this tragedy. One of the most...

sick siberian cat

Why Is My Cat Scared All of a Sudden? 10 Vet-Approved Reasons

It can be very disconcerting to a loving cat parent when their cat starts acting scared. True, some cats are naturally more nervous or jumpy than others, but if the change is sudden and unexpected, it’s important to try and...

scared British blue-point cat hiding under the bed