What does it mean to have granuloma annulare? Is this life threatening?

Benign skin rash. Granuloma annulare (ga for short) is a relatively common inflammatory disease that occurs in all age groups. Ga is characterized clinically by raised skin colored to red bumps arranged in a ring like pattern usually on hands and feet. The precise cause of ga is unknown.
No. It is only in the skin and can be suppressed with medicine.Either topical, injections of cortisone cream or oral agents in severe cases such as dapsone.