original: this disease is often mild and attacks often pass unnoticed .
simplifications: this illness is usually not even noticed by patients . this disease is mild and attacks usually go unnoticed . this disease is often mild with unnoticeable attacks . attacks of this mild disease often pass unnoticed . this disease is often mild and attacks often pass unnoticed . this disease is often mild and attacks often pass unnoticed . this disease is often mild and attacks often pass unnoticed . the signs of attacks are not visible in this mild form of disease