Fragile or thin skin that tears easily is a common problem in older adults. Aging, sun exposure and genetics all play a role in thinning skin. Certain medications, such as long-term use of oral or topical corticosteroids, also can weaken the skin and blood vessels in the skin.Thin skin isn't necessarily a sign of a serious underlying medical condition. But you might want to see a doctor, who can evaluate your skin.To protect thin skin and prevent tears and cuts: