Final answer:
The statement is true; acne rosacea often affects middle-aged females. It is a type of chronic acneiform disorder causing facial redness and sometimes pus-filled bumps. This is distinct from acne vulgaris, which commonly affects teenagers and young adults.
Step-by-step explanation:
The statement that acne rosacea is a chronic acneiform disorder mainly affecting females between 30 and 50 years of age is true. Acne rosacea, often just referred to as rosacea, is a common skin condition that causes redness and visible blood vessels in your face. It may also produce small, red, pus-filled bumps. While it can affect anyone, it is more commonly seen in middle-aged females. However, it is important to distinguish rosacea from other types of acne, such as acne vulgaris, which is the most common form of acne and can afflict nearly 80% of teenagers and young adults due to hormonal changes causing overproduction of sebum. Acne vulgaris is characterized by symptoms including pimples, blackheads, and possibly scarring, typically on areas of the skin rich in sebaceous glands, such as the face and back.