While fairly rare, some people have or develop severe reactions and symptoms from bed bug bites. Serious symptoms that require medical attention include: difficulty breathing; blisters; fever
Bed bugs affect people in a number of ways, but perhaps the most important are various skin reactions and allergic reactions. True allergic reactions are rare from bed bug bites, and anaphylactic shock is even rarer; however, people often claim that severe bite reactions are allergic (but sometimes this is not the case).
Black widow spider bites may cause stabbing pain in the bite area, but they can also be painless. Look for one or two red fang marks, redness, tenderness, and a nodule at the bite site. Severe muscle cramps, nausea, vomiting, seizure, and a rise in blood pressure may follow soon after. Get medical care immediately.
If a bedbug bites your skin, you won't feel it right away because the bugs excrete a tiny amount of anesthetic before feeding on people. It can sometimes take a few days for symptoms of bed bug
Bites of bed bugs in most cases have a favorable prognosis - if there is no allergic reaction to them, they are safe for health. But you can not allow them to multiply (as this can cause great discomfort), so after identifying the cause of bites on the body, it is necessary to destroy the insects living in the house as soon as possible.
If you're experiencing a more rare, severe case, you might even find blisters larger than 0.5 cm in diameter that have developed on bed bug bites. 1 centimeter equals 0.4 inches. 2 Look for new bug bites when you wake up.