Low blood sugar can turn dangerous in minutes for people with diabetes. American Diabetes Association, CDC and NIDDK guidance on hypoglycemia symptoms, the 15-15 rule, glucagon for severe lows, when to call 911 and how to plan for lows during outages and emergencies.

Electrical injuries can be hidden and deadly, and rescuers are often hurt trying to help. Mayo Clinic, American Red Cross and Electrical Safety Foundation International guidance on shutting off power, first aid after a shock, when to call 911 and why to stay at least 35 feet from downed lines.

Kitchen knives, broken glass and sidewalk falls cause most household cuts and scrapes. Mayo Clinic, American Academy of Dermatology and CDC guidance on stopping bleeding, cleaning a wound, bandaging, tetanus shots, when to get stitches and infection warning signs.

Bumps to the head are common after falls, especially in dark stairwells or on icy sidewalks. CDC HEADS UP, Mayo Clinic and Red Cross guidance on concussion symptoms, the danger signs that need 911, first aid for scalp bleeding, extra caution for older adults and people on blood thinners, and recovery basics.

Falls on icy sidewalks, stairwells and cluttered floors cause many sprains and fractures. Red Cross, Mayo Clinic and orthopedic guidance on telling a sprain from a strain or a break, the RICE method, how to make a simple splint, open fractures, when to call 911 and what to keep in your apartment first aid kit.

Most seizures end on their own within a few minutes, and the right first aid is simple. Epilepsy Foundation, CDC and Red Cross guidance on what to do during a seizure, when to call 911, the recovery position, myths to avoid, seizure action plans and how to prepare for seizures during emergencies and outages.

Anaphylaxis is a fast, life-threatening allergic reaction. Guidance from allergy specialists, the Red Cross and FDA on recognizing symptoms, using epinephrine right away, calling 911, positioning, second doses, why antihistamines are not enough, and how to store epinephrine at home and in a go-bag.

Heart attack symptoms are not always the crushing chest pain seen in movies. American Heart Association and CDC guidance on warning signs in men and women, why you should call 911 instead of driving, aspirin questions, CPR and AED steps, and how to prepare an apartment household.

A stroke is a medical emergency where minutes matter. How to recognize stroke warning signs with F.A.S.T. and BE FAST, why you should call 911 instead of driving, what to note about the time symptoms started, what not to give, and how to prepare your household and building.

If someone swallows, breathes in or touches something harmful, fast expert advice matters. How the free Poison Help line at 1-800-222-1222 works, when to call 911 instead, first steps for swallowed, skin, eye and inhaled exposures, why you should not induce vomiting, common household poisons for kids and adults, naloxone, pet poison resources and how to poison-proof a small apartment.