input: [1] Hair falls out in large quantities, large areas of baldness, patchy fur coverage. [2] Allopaetia Stress Allergy External parasites [3] Allopaetia- not common in degus but can occur due to a poor diet or lack of iron in the diet. Can be congenital and brought on by stress. May be a thyroid problem71 . Stress- numerous causes, specific to each individual. Allergy- caused by exposure to an allergen specific to the degu. Could be a wide variety of allergenic substances such as disinfectant, sawdust, or dietary component. Parasites- usually mites or fungal ringworm affecting the skin. Often contracted through direct contact with infected degu/cage or transmitted from hay. [4] Quarantine new degus before allowing contact. Treat hay that is brought from an open bale before feeding. Isolate infected degu. Determine source of allergen by process of elimination and remove from environment. Check degus diet and change if necessary. Do not breed from a degu with a history of allopaetia. Determine the source of stress and remove from the degu's environment. Remember that fur shedding is perfectly normal during shedding season, but your degu should never appear bald. [5] (Allopaetia) GOOD to REASONABLE (Stress) REASONABLE to POOR (Allergy) GOOD to REASONABLE (Parasites) GOOD to REASONABLE [0] 
output: Fur