Skin 1

• What are the two types of skin diseases in veterinary medicine?

  Skin diseases can be primary (originating in the skin) or secondary (resulting from systemic issues).
• What is congenital hypotrichosis, and which breeds are affected?

  Congenital hypotrichosis is hairlessness in breeds like Mexican Hairless dogs, Chianina calves, and some lambs.
• What is collagen dysplasia, and what does it result in?

  Collagen dysplasia is abnormal collagen formation that leads to fragile skin prone to tearing.
• What is epidermolysis bullosa, and where does it most commonly occur?

  Epidermolysis bullosa is blistering of the skin, often in pressure areas, due to defective skin adhesion.
• What is ichthyosis?

  Ichthyosis is abnormal scaling and keratinization of the skin, leading to thickened and dry patches.
• Which breed is primarily affected by lethal acrodermatitis, and what is the outcome?

  Bull Terriers are affected, with marked parakeratosis leading to death from bronchopneumonia, usually by 15 months.
• What diseases are caused by chronic UV exposure in animals?

  Chronic UV exposure can cause skin cancer, melanomas, and solar elastosis.
• What is photosensitization, and what are its types?

  Photosensitization is UV-induced skin damage due to photodynamic chemicals or abnormal metabolism.
• What are the types of photosensitization?

  Type I is caused by ingestion of photodynamic plants or drugs, Type II is due to abnormal porphyrin metabolism, and Type III is due to liver dysfunction.
• What is the result of acute solar dermatitis in animals?

  Acute solar dermatitis results in sunburn, usually seen in animals with photosensitization.
• What are the long-term effects of chronic solar dermatitis?

  Chronic solar dermatitis leads to solar elastosis, fibrosis, and potential skin cancers.
• What causes acral lick dermatitis in dogs, and how is it treated?

  Acral lick dermatitis is caused by excessive licking due to behavioral issues or anxiety, treated with behavioral modification and possibly medications.
• What causes psychogenic alopecia in cats, and where are the lesions typically found?

  Psychogenic alopecia is caused by chronic grooming behavior, typically seen in young, nervous female cats with lesions on the ventral abdomen and inguinal areas.
• What causes callus formation in large breed dogs, and how can it be managed?

  Callus formation is caused by pressure from bony prominences on hard surfaces, managed by changing bedding to reduce pressure.
• What causes skin fold dermatitis, and how can it be prevented?

  Skin fold dermatitis is caused by friction and moisture between skin folds, prevented by keeping the area clean and dry.
• What is vitiligo, and is it usually associated with other systemic diseases?

  Vitiligo is depigmentation of the skin, resulting in lighter patches, and is not typically associated with systemic disease.