I hv been given triamcinolone acetonide inj due to atopic eczema. Hw long does inj stays in the blood n has effects? Wt is very safe time gaps btw inj

Unsafe. This should be reserved for emergency and not as maintenance. Its effect may last for about a week. The most important step is applying moisturizer within 3 minutes after bathing on a regular basis plus topical steroid or something like protopic. You need to consult an allergist if you have one in your area since there are many other much safer treatment options.