The early symptoms of multiple sclerosis include loss of balance, tingling, numbness, blurred vision and weakness in one of the limbs, states WebMD. Double vision, lack of coordination and thinking problems are also some of the early symptoms of MS.
A person with multiple sclerosis tends to develop symptoms sometime between 20 and 40 years of age, notes WebMD. Some symptoms are persistent, while others come and go. Not everyone with multiple sclerosis experiences the same symptoms. As MS worsens, it can cause bladder problems, dizziness, difficulty walking, fatigue and unusual sensations. People with MS often experience speech problems, muscle spasms, tremors, sexual problems and memory problems.
MS symptoms are classified as primary, secondary or tertiary, states WebMD. Primary symptoms are a direct result of damage to the protective covering of the nerves, brain and spine. Over time, the damage results in scarring, which makes it difficult for signals to travel through the nervous system. Secondary symptoms are caused by other MS symptoms. If a person with MS has difficulty emptying her bladder, she might develop a bladder infection, which would be classified as a secondary symptom. Tertiary symptoms are the social, professional and psychological issues associated with MS. Someone who has difficulty remembering things might not be able to perform well at her job, for example.