If your family member (over 60 years of age) has muscular aches, fatigue and forgetfulness you may blame it on old age. But do you know these symptoms can signal hypothyroidism? Yes, it is very difficult to decipher symptoms of many diseases. A common fever with joint pains may turn out to be something as serious as Chikungunya!

What is terrifying is the fact that sometimes even doctors may miss out on the underlying cause for some symptoms. It is very crucial that you tell the tiniest details to your doctor. Observe the signs of discomfort. Listen to your body. It is better to be informed well to diagnose the root cause of many conditions.

Know more about 15 ailments that may go undetected for long at CNN.com.