H. pylori infection (helicobacter pylori) Description Helicobacter pylori bacteria infect the lining of the stomach, causing inflammation. They can spread from on…
Hair loss (alopecia) Description Excessive loss of hair from the scalp. The medical term is alopecia. The disorder can have many causes inclu…
Hammer toes (toe deformity) Description A toe that becomes progressively deformed, and bent like a claw. This condition usually affects the second t…
Hand foot and mouth disease (Coxsackie virus) Description A viral infection that usually begins in the throat. It can also involve the upper palate, tonsils, skin, ga…
Hand fracture (broken hand) Description A fracture is a broken bone. There are 27 bones in the hand and fractures are a common injury If after the f…
Hand laceration (skin cut) Description Cut on the hand. Lacerations of the hand can be simple involving only the skin or complex with injury to ten…
Hand swelling Description Hand swelling can result from conditions such as inflammation, infection, allergic reaction, or cancer. Infl…
Hantavirus infection (rare, serious viral infection) Description This virus can infect the lungs causing a rare, life threatening illness. Effective treatment is not yet ava…
Head injury Description Head injuries range from minor trauma to concussions, unconsciousness and death. Traumatic injury to the bra…
Head injury in children Description Pediatric head trauma occurs when a child bumps their head. Usually, the trauma is minimal and only results …
Head lice Description Tiny insects that live on the scalp. They feed on the blood of the infected person and are easily spread by …
Head trauma Description Head injuries range from minor trauma to concussions, unconsciousness and death. Traumatic injury to the bra…
Headache Description A headache refers to pain in the head or upper neck. It ranks among the most common local pain complaints an…
Hearing loss Description A hearing impairment or hearing loss is a full or partial decrease in the ability to hear. It can be the res…
Heart arrhythmia (abnormal heart rhythm) Description An abnormal heart rhythm is called an arrhythmia (also called dysrhythmia). A normal heart rate is 60 to 100…
Heart attack (acute myocardial infarction, AMI) Description Damage or death of heart muscle caused by a blockage of an artery (coronary artery) that supplies blood to a…
Heat cramps Description Painful, brief muscle cramps. Heat cramps generally occur after exercise or work in a hot environment or beg…
Heat exhaustion Description A heat-related illness that is often caused by several days of exposure to elevated temperatures and dehydra…
Heat rash Description A red or pink rash occurring on body areas covered by clothing. Blocked sweat glands lead to discomfort and …
Heat stroke Description The result of prolonged exposure to hot temperatures, dehydration, or a failure of the brain to regulate the…
