Sea Nettles

    Sea Nettles are mostly found along the east coast of North America in the Atlantic Ocean. The Sea
Nettle is semi-transparent and has small whitish dots and reddish-brown stripes. The bell of the Sea Nettle usually grows to about 6 to 8 inches in diameter. It also has four oral arms attached to the underside of the mouth. It also has a number of long tentacles which extend several feet. A Sea Nettles tentacles are lined with barbs that contain a paralyzing toxic inside of them. When a Sea Nettle comes in contact with any hard surface and pressure is applied to the tentacles, they become active. This is how the Sea Nettle catches it's prey. Sea Nettles eat a number of significantly larger preys unlike most jellyfish. The Sea Nettle is also known to feed upon other jellyfish and jellyfish larvae.

Bone OCD

    Osteochondritis dissecans, Also known as OCD is, is a small area of dying bone tissue. OCD can happen in any joint. The bone dies because it is not getting enough blood. OCD occurs when bone and cartilage separate from one another inside a joint. If it's not treated, a chunck of bone can come lose inside the joint. Children of all age can get OCD, but it is more common in teenagers. The most common location of OCD is in the knee at the end of the femur. No one knows exactly what causes the disruption to the blood supply that results in OCD. Doctors think it probably involves repetitive trauma or stresses to the bone over time, or a change in activity. In most cases OCD lesions in children and young teens will heal on their own, especially when the body still has a great deal of growing to do. Resting and avoiding vigorous sports until symptoms resolve will often relieve pain and swelling. Some cases of OCD in the bones can start with an overuse injury. If the problem does not resolve, sometimes surgery is necessary to fix the bone and the tissue. 

Sources:

Welcome to Seattle Children’s." Seattle Children's Hospital. N.p., n.d. Web. 06 Mar. 2014. http://www.seattlechildrens.org

Concussions

   A concussion is a minor traumatic brain injury that may occur when the head hits an object, or a moving object strikes the head. A lot of times concussions are caused from a violent jarring or shacking of the head that results in a disturbance of the brain function. Falling, sports activities, and car accidents are the leading causes of concussions. Symptoms include confusion, headaches, nausea, vomiting, etc. Sometimes its not always apparent if a person has a concussion. To find out doctors might take and EEG, a head CT scan, or an MRI of the brain. There is no immediate cure for a concussion. the only ways to cure a concussion is to rest, avoid bright lights, and don't do anything that overstimulates the brain. one way to prevent concussions when doing sports is to always wear safety gear such as a helmet.



Sources:
http://www.ncbi.nlm.nih.gov

Staph Infection

    About 25 years ago, my grandmas 17 year old cousin who lived out in the country got in a serious car accident. He was seriously injured and was rushed to the closest hospital. He had major surgeries for internal bleeding, but managed to live. The medical tools used for his surgeries were not properly sterilized  before his surgery and although he survived the accident and the surgeries, he got staph infection. When he recovered from the accident he only had a small limp, but he had a serious case of Staph Infection. He struggled for about five years with the terrible infection. Doctors could not manage to get the infection out because it was so deep. The infection ended up becoming so sever that it took his life. Now days all of the medical tools used for surgeries are packaged, so when a doctor performs a surgery there is no risk of getting a serious infection because of unclean tools.        
     Staph infection is caused by open sores or cuts that become infected with bacteria. This infection can become deadly if the bacteria invades deeper into your body, entering your bloodstream, joints, bones, lungs, or heart. The best way to prevent Staph Infection is to keep hands and wounds clean. Although Staph is treatable with antibiotics, if it is not treated fast enough it can spread throughout the body and get into the bloodstream. Staph Infection can become a very serious problem if it is not treated properly. Be sure to keep your hands wounds clean so that they won't get infected.

Sources

http://www.mayoclinic.org

http://www.webmd.com

http://www.nlm.nih.gov

Strokes

   Strokes are very serious. They can change your life in a matter of minutes. A strokes is sometimes called an acute cerebrovascular attack. Basically stokes are rapidly developing losses of brain functions due to disturbances in the blood supply to the brain, or due to ischemia (lack of glucose and oxygen supply). Ischemia is caused by thrombosis, embolism, or hemorrhage. The effected area of the. Rain is unable to function, leading to inability to move one or more limbs on one side of the body. It could also cause to understand or formulate speech or inability to see one side of the visual field. Strokes can cause permanent neurological damage, complications, and even death. Strokes are the leading causes of adult disability in the United States. They are also the number two cause for deaths worldwide. High blood pressure is the most important modifiable risk factor of a stroke. The twenty four hour limit divides a stroke from a transient ischemia attack. A transient ischemia attack is a related syndrome of stroke symptoms that resolve within twenty four hours. Ischemia strokes are the most common. They accrue when blood clots block the blood vessels to the brain. There are many risk factors that go along with strokes, including: advanced age, high blood pressure, previous strokes, diabetes, high cholesterol, heart disease, and smoking. There are two major types of strokes.the first type is a hemorrhagic stroke, which is due to rupture of a blood vessel, or an abnormal vascular structure. The second type of stroke is a Transient Ischemia Attack (TIA), which are due to the interruption of the blood supply. Eighty percent of strokes are due to transient ischemia attacks. If someone is having a stroke they may feel numbness of the face, arms, or legs. They may also experience confusion or trouble speaking or understanding speech. Trouble walking, dizziness, sever headaches, and trouble seeing also may accrue. All these symptoms happen very suddenly and without warning, so iris very important to get medical help immediately. After a stroke, the symptoms range from mild to sever depending on how bad the stroke was. Some symptoms are paralysis, problems thinking and speaking, emotional problems, pain, and numbness. Strokes are toning to mess around with. They can cause physical and mental damage.

Sources 
news-medical.net

ninds.nih.gov


strokeinfo.org

Yellow Fever

  Yellow Fever is a virus carried by mosquitoes. Anyone can get yellow fever, but the elderly have a higher risk of sever infection. People get the disease by getting bitten by an infected mosquito. This disease is common in South America, and in sub-Saharan Africa. There are three stages to the disease. As the infection takes over the symptoms get worse. Blood tests can confirm if a person has yellow fever or not. Some symptoms include Irregular heart beat, coma, fever, headaches, yellow skin and eyes, vomiting, bleeding, and sometimes death. Although there is no known cure for yellow fever, there are some ways to help with the symptoms of the disease.

nlm.nih.gov