Which of the following are signs of an infection a cosmetologist should observe for?

The signs of an infection that a cosmetologist should observe for include redness, swelling, warmth, pus, and persistent pain. These symptoms are characteristic indicators of an inflammatory response in the body, which often suggests that an infection is present. Redness and warmth usually occur due to increased blood flow to the affected area, while swelling can result from the accumulation of fluids and immune cells that respond to the infection. The presence of pus indicates that there may be a localized collection of dead cells, bacteria, and other debris resulting from the body’s attempt to fight off the infection. Persistent pain is also a common symptom as it can signify tissue damage or irritation in the area.

Other choices contain symptoms that may relate to different health concerns unrelated to infection. For instance, a pale complexion, persistent hiccups, and headaches could indicate various issues but do not specifically indicate an infection. Similarly, dry skin and brittle nails are often signs of nutritional deficiencies or environmental factors rather than infection. Scalp itchiness and hair loss might suggest conditions like dermatitis or fungal infections, but they are not as definitive as the symptoms listed in the correct option when assessing for an infection. Therefore, recognizing the specific signs of inflammation is crucial for cosmetologists to ensure the health and safety of their