(HealthDay News) - Diabetics are prone to many complications, particularly if their blood sugar levels aren't well controlled.

Diabetic neuropathy, or nerve damage, makes it difficult for the nerves to send signals to other parts of the body. The symptoms described below should be evaluated by a physician without delay.

The American Academy of Family Physicians lists these warning signs of nerve damage in diabetics:

* Numbness, particularly in the fingers or toes.
* Sharp pains or a tingling sensation.
* Sores found on the feet.
* Weakness in the muscles.

Saline irrigation is a safe, inexpensive and effective method for treating chronic nasal and sinus symptoms, according to a new study.

Researchers at the University of Michigan Health System also concluded that saline irrigation -- the flushing of nasal passages with a salt water mixture -- is more effective than commonly used saline sprays at providing short-term relief of chronic nasal symptoms.