الفهرس 
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Abstract
The present work was carried out to make pathological survey on the most common skin affections in camels. The total examined animals were 3550 of different ages, sex and different seasons (summer, autumn, winter and spring). The specimens were collected from different areas in Al Ain city, United Arab Emirates during the period of January, 2012 to January, 2015. Two hundred and fifty cases out- of 3550 (7.04%) showed skin affections and these affections were infectious diseases (parasitic, fungal, viral, bacterial diseases) in 186 cases followed by miscellaneous diseases(dermoid cyst, skin burns) and neoplastic diseases(squamous cell papilloma, squamous cell carcinoma and sebaceous gland carcinoma)8 cases. Infectious diseases were detected in (5.24%) of cases. Parasitic diseases were reported in (3.77%) of cases including Tick Infestation in (1.04%) of cases showed macroscopically, Ticks were firmly attached to the body. In the infested camels, the ticks were attached firmly at the perineum, distal limbs, groin, around the udder, particularly under the tail and sometimes cover all over the body. Skin showed alopecia, crusts and erosions. Microscopically, crust from necrotic debris, keratin, bacterial colonies, hyperkeratosis and hydropic degeneration of epidermal cells. Mange Infestation in (1.21%) of cases showed alopecia, cracks and scaling. Lesions were detected on the legs, head, neck, trunk, abdomen, flank and perineum .Microscopically, sever hyperkeratosis. Besides, scab formation with necrotic debris was seen. Wound and Myiasis in (1.52%) of cases showed macroscopically, wound infested by developing larvae of different flies resulted in discharges and sore. Microscopically, severe extravaseted blood (hemorrhage) and devitalized tissue were seen. Wound healed by granulation tissue, which fill the wound gap. Fungal diseases in (0.7%) of cases including dermatophytosis in (0.62%) of cases, which macroscopically showed circumscribed hairless areas with crust formation on the skin of neck, around the eyes, at the base of the ears, limbs, flank region and sometimes all over the body (3-5cm in diameter) . Microscopically, epidermis was thickened with hyperkeratosis, acanthosis and hypertrophy of epidermis, perifolliculitis and presence of inflammatory cells and basophilic arthrospores. Candidiasis in (0.08%) of cases showed macroscopically areas of alopecia containing scales and thick crusts. Microscopically, the affected skin showed perivascular dermatitis, hyperkeratosis, acanthosis, inflammation and edema in dermis layer. Viral diseases were detected in (1.41%) of cases including Contagious Ecthyma in (0.42%) of cases, their gross lesions appeared as yellowish to blackish papules, pustules, ulceration and scabs are scattered all over lips, gums and adjacent areas. Microscopically, epidermis showing proliferative lesion resulted in laminated layers from hyper keratinization, Acanthosis, degenerative changes of the proliferated cells beside dermatitis. Camel Pox in (0.99%) of cases. macroscopically, small raised papules o.1- 0.5cm in diameter are scattered on the neck and all over the body, mucopurulant nasal discharge and enlarged lymph nodes.