Why Does My Cat Have Scabs, Sores or Skin Lesions?
If your cat has developed scabs, sores, crusting or areas of damaged skin, it can be concerning and sometimes difficult to recognise early. In cats, skin disease does not always present as obvious scratching. Instead, many cats develop subtle skin lesions, small scabs, crusting, plaques or ulcerated areas that may reflect an underlying dermatological condition requiring further investigation.
Skin lesions in cats are often associated with allergy, parasites, infection or inflammatory skin disease, and identifying the underlying cause is important to guide appropriate treatment and achieve more effective, long-term control.
Common Questions You May Be Asking
If your cat has developed scabs, sores or skin lesions, you may be asking:
- Why does my cat have scabs on its skin?
- Why does my cat have sores or wounds?
- Why are there little crusts or bumps on my cat?
- Is this an infection or something else?
- Can fleas or mites cause scabs in cats?
- Could this be related to allergy or overgrooming?
- Why do these skin lesions keep coming back?
- When should I be concerned about skin sores or scabs?
These are some of the most common concerns we see, and they are often linked to the same underlying causes.
What Causes Skin Lesions in Cats?
Skin lesions are a sign, not a diagnosis. Identifying the underlying cause is essential for effective treatment and long-term control.
The most common causes include:
- Allergic skin disease (cat allergies) → Learn more
Allergies are a common cause of skin lesions in cats and may present as scabs, crusting, sores, overgrooming or self-trauma. - Parasites (fleas, mites and ringworm) → Learn more
Fleas, mites and other parasites are an important cause of irritation and skin lesions in cats, even when they are not easily visible. - Skin infections → Learn more
Bacterial, yeast or fungal infection may contribute to crusting, sores, ulceration or localised skin damage, often secondary to underlying disease. - Inflammatory skin conditions
Some cats develop distinctive inflammatory lesion patterns, including plaques, ulcers or raised lesions, as part of conditions such as eosinophilic granuloma complex. - Less common or more complex causes
Less commonly, skin lesions may be associated with immune-mediated disease, trauma, abscessation, growths or other dermatological conditions.
In many cats, more than one contributing factor may be involved, particularly where signs are ongoing or recurrent.
What Do Skin Lesions Look Like?
Skin lesions in cats can appear in different ways depending on the underlying cause. Signs may include:
- Small scabs or crusts within the coat
- Sores or ulcerated areas
- Raised, thickened or plaque-like lesions
- Red, inflamed or irritated skin
- Areas of hair loss associated with skin damage
- Localised or more widespread affected areas
- Overgrooming or licking around affected sites
Some lesions are obvious, while others may be hidden beneath the coat or only noticed when stroking or grooming the cat. Skin lesions in cats are often more subtle than owners expect, especially in early stages.
Why Does It Keep Coming Back?
Skin lesions often recur when the underlying cause has not been fully identified or controlled. In many cats, ongoing allergy, parasite exposure, infection or inflammation leads to repeated episodes of skin irritation and damage.
This may result in:
- Recurrent scabs or crusting
- Repeated sores or ulcerated areas
- Ongoing skin discomfort
- Temporary improvement followed by relapse
Without identifying the underlying cause, skin lesions are likely to persist or recur over time.
When Should You Seek Help?
If your cat is showing these signs, the first step is to consult your primary care veterinarian, who can assess your cat and begin initial treatment.
Further investigation or referral may be recommended if your cat:
Has persistent or worsening scabs, sores or skin lesions
Has crusting, ulceration or skin damage that is not resolving
Appears uncomfortable or is overgrooming affected areas
Has recurrent skin problems or repeated flare-ups
Is not improving with routine or first-line treatment
In these cases, specialist dermatology assessment starting with a dermatology consultation can help identify the underlying cause and guide more effective, long-term management.
Early assessment can help prevent progression and reduce ongoing discomfort, particularly where allergy, infection or inflammatory skin disease is involved.
Take the Next Step for Your Pet’s Care
If your cat’s skin lesions are ongoing or not improving, a consultation can help identify the underlying cause and guide effective, long-term management. Our team will work with you to develop a clear, practical plan tailored to your pet’s condition.
Explore our services, get to know our team or find our nearest clinic location.
When you’re ready, arranging your pet’s first appointment with us is just a few steps away.
Frequently Asked Questions
Why does my cat have scabs but is not scratching much?
Cats do not always show itch in obvious ways. Some cats groom, lick or chew rather than scratch openly. Skin disease can be present even when obvious scratching is limited, which is one reason lesions in cats are sometimes recognised later.
Are scabs in cats always caused by fleas?
No. Fleas are an important cause, but allergy, mites, infection and other inflammatory skin conditions can also cause scabs or crusting.
What is the difference between a scab, a sore and a skin lesion?
A scab is crusted surface damage, while a sore usually refers to a more open or ulcerated area. A skin lesion is a broader term that includes any abnormal change in the skin, such as crusts, ulcers, plaques or raised areas.
Can overgrooming cause skin lesions in cats?
Yes. Repeated licking or chewing can damage the skin and contribute to sores, crusting or secondary infection. Overgrooming may be both a sign of underlying disease and a cause of further skin damage.
Could these lesions be part of a more specific skin condition?
Yes. Some cats develop characteristic inflammatory lesion patterns rather than general itch alone. Distinctive plaques, ulcers or raised lesions may reflect specific feline dermatological conditions, which is why further assessment can be important.