As people are increasingly going out and about after months of quarantining indoors, officials are warning of the dangerous side to summer heat.

During periods of sweltering heat, many run the risk of heat exhaustion, which if left untreated can lead to life-threatening heat stroke.

Medical experts are warning people to know the signs before running into heat-related trouble. 

Common symptoms of heat exhaustion include:

• Confusion
• Dizziness
• Fainting
• Fatigue
• Headache

Doctors warn that heat stroke can kill and damage the brain or other internal organs.

Warning signs of heat stroke include:

• High body temperature
• Altered mental state or behavior
• Nausea and vomiting
• Rapid breathing
• Racing heart rate

Anyone experiencing these symptoms is encouraged to seek immediate medical help.

Officials are also reminding individuals to check on elderly neighbors, children and those with respiratory conditions.

The following preventative measures can be taken to prevent heat exhaustion and heat stroke.

• Wear loose fitting, lightweight clothing
• Wear sunscreen to protect against sunburn
• Drink plenty of fluids
• Limit activities during hottest parts of the day

The ASPCA says that pets can also be affected by extreme heat.

According to the ASPCA, pets get dehydrated quickly and should stay hydrated with plenty of fresh and clean water. Pet owners should make sure their pets have a shady place to get out of the sun if they are outdoors.

On extremely hot days, pets should not be over-exercised. The ASPCA encourages pet owners to keep their pets indoors when it becomes too hot outside.

Some signs of pets overheating include excessive panting, increased heart and respiratory rate, drooling, mild weakness and stupor or even collapse.

Some breeds of dogs are more at risk than others. According to Scientific Reports, such breeds include chow chows, bulldogs, pugs and golden retrievers.