In severe cases, the skin may blister and fill with pus, or the skin might develop red streaks. Nearby lymph nodes may also ...

Infected bug bites may require a course of antibiotics. Seek urgent medical treatment if you develop red skin streaks, the bite area spreads, your pain worsens, or you develop symptoms of sepsis.

At-home red light therapy devices are sparking interest in this trendy skin treatment — but does it deliver on its promises? Here's what experts think.