Signs of biotin deficiency include hair loss, dermatosis, anorexia, nausea, weight loss, muscle pains, and localized loss of sensation.

Here is a site where they list foods with biotin
http://www.healthyeatingclub.com/info/books-phds/books/foodfacts/html/data/data4h.html

Pantothenic acid and biotin are found in foods that are good sources of B vitamins, including the following:

* Eggs
* Fish
* Milk and milk products
* Whole-grain cereals
* Legumes
* Yeast
* Broccoli and other vegetables in the cabbage family
* White and sweet potatoes
* Lean beef
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