Skin diseases

Flea allergy dermatitis in a Domestic shorthair cat

File:Not2.jpg

Notoedres spp infestation in a Domestic shorthair cat

File:Ring3.jpg

Microsporum spp infection (Ringworm) in a Domestic shorthair kitten

Ulcerative nasal dermatitis (cold sores) in an FHV-infected cat that also suffered chronic FLUTD, sinusitis and conjunctivitis

File:Digit1.jpg

Feline plasma cell pododermatitis of unknown etiology

File:Cutaneous asthenia.jpg

Cutaneous asthenia in a Domestic shorthair cat

Pemphigus foliaceous in a 4 year old cat that presented acutely with inappetance and lethargy

A 6-year-old Domestic shorthair cat with plasma cell chondritis, showing bilateral distortion of the pinnae. (Courtesy F. Dalzell)

Idiopathic lymphocytic mural folliculitis in a Domestic shorthair cat

Skin diseases encompasses a feline medical specialty within itself.

Skin conditions are one of the most common presentation in cats and account for up to 20% of causes of presentation to veterinary clinics worldwide.

• See also Morphological description of skin lesions
• Note: The term miliary dermatitis is a symptom of disease rather than a diagnosis and further investigation is required to ascertain an accurate diagnosis.

• Genetic skin diseases

- Long hair

- Rex coat

- Congenital hypotrichosis

- Follicular dysplasia

- Hair dysplasia

- Pili torti

- Hereditary epidermolysis bullosa

- Hereditary greasy seborrhoea

- Cutaneous asthenia

- Urticaria pigmentosa

Genetic abnormalities in melanin pigmentation

- Vitiligo

- Waardenburg syndrome

- Piebaldism

- Oculocutaneous albinism

- Chediak-Higashi syndrome

- Lentigines

• Degenerative skin diseases

- Lentigo in old cats

• Psychologically-induced skin diseases

- Psychogenic alopecia

• Allergic/Immune-mediated skin diseases

- Skin fragility syndrome

- Atopy

- Eosinophilic granuloma complex

- Flea allergy dermatitis

- Food allergy dermatitis

- Idiopathic facial dermatitis in Persian cats

- Idiopathic lymphocytic mural folliculitis

- Idiopathic ulcerative dermatitis

- Pemphigus

- Plasma cell pododermatitis

- Plasma cell chondritis

- Systemic lupus erythematosus

- Cutaneous xanthoma

• Viral

- FHV dermatitis

- Pox virus infection

- Feline sarcoids - possible association with bovine fibropapilloma virus

• Bacterial

- Superficial pyoderma

- Deep pyoderma

- Acne

- Juvenile pustular dermatitis

- Miscellaneous bacterial infections

• Fungal skin diseases

- Ringworm

- Malassezia spp

- Dermatophytic pseudo-mycetome of Persian cats

- Deep fungal opportunist infections

- Paronychia

• Parasites

- Flea allergy dermatitis

- Mites

- Cheyletiella spp

- Demodex spp

- Notoedres spp

- Otodectes spp

- Trombiculosis

- Sarcoptes spp

- Nematodes

- Rhabditis strongyloides, Strongyloides spp, Ancylostoma spp, Anatrichosoma spp, Lagochilascaris spp

• Neoplastic skin diseases

- Basal cell tumour

- Cutaneous horn - benign

- Ceruminous adenoma, :ceruminous carcinoma

- Calcinosis cutis, metastatic

- Cutaneous haemangiosarcoma

- Cutaneous xanthomatosis

- Epidermal cysts

- Feline bowenoid in situ carcinoma

- Fibromatose

- Fibropapilloma (sarcoids)

- Fibrosarcoma

- Follicular lymphoma

- Lymphocytosis

- Lymphosarcoma - cutaneous

- Lymphosarcoma - mycosis fungoides

- Lymphosarcoma - sezary syndrome

- Lymphosarcoma - pagetoid reticulosis

- Malignant fibrohistiocytoma

- Mammary adenocarcinoma - cutaneous metastasis

- Mast cell tumour

- Melanoma

- Pancreatic paraneoplastic alopecia

- Paraneoplastic exfoliative dermatitis

- Paraneoplastic pruritus

- Pulmonary adenocarcinoma - cutaneous metastasis

- Squamous cell carcinoma

- Superficial necrolytic dermatitis