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Ptosis is a condition that causes drooping eyelids. This could be caused by the weakening of muscles around the eye, aging, a complication of certain diseases, trauma, or it may be present from birth.
Causes and Symptoms. Posterior tibial tendon overuse is one of the most common causes of PTTD. PTTD-related symptoms usually develop following activities such as stair climbing, hiking, walking, and running. PTTD may also be caused by a tendon abnormality.