Concussion

A concussion is a type of brain injury. It involves a short loss of normal brain function. It happens when a hit to the head or body causes your head and brain to move rapidly back and forth. This sudden movement can cause the brain to bounce around or twist in the skull, creating chemical changes in your brain. Sometimes it can also stretch and damage your brain cells.

Sometimes people call a concussion a "mild" brain injury. It is important to understand that while concussions may not be life-threatening, they can still be serious.

Concussions are a common type of sports injury. Other causes of concussions include blows to the head, bumping your head when you fall, being violently shaken, and car accidents.

Symptoms of a concussion may not start right away; they may start days or weeks after the injury. Symptoms may include a headache or neck pain. You may also have nausea, ringing in your ears, dizziness, or tiredness. You may feel dazed or not your normal self for several days or weeks after the injury. Consult your health care professional if any of your symptoms get worse, or if you have more serious symptoms such as:

• Convulsions or seizures
• Drowsiness or inability to wake up
• A headache that gets worse and does not go away
• Weakness, numbness, or decreased coordination
• Repeated vomiting or nausea
• Confusion
• Slurred speech
• Loss of consciousness

To diagnose a concussion, your health care provider will do a physical exam and will ask about your injury. You will most likely have a neurological exam, which checks your vision, balance, coordination, and reflexes. Your health care provider may also evaluate your memory and thinking. In some cases, you may also have a scan of the brain, such as a CT scan or an MRI. A scan can check for bleeding or inflammation in the brain, as well as a skull fracture (break in the skull).

Most people recover fully after a concussion, but it can take some time. Rest is very important after a concussion because it helps the brain to heal. In the very beginning, you may need to limit physical activities or activities that involve a lot of concentration, such as studying, working on the computer, or playing video games. Doing these may cause concussion symptoms (such as headache or tiredness) to come back or get worse. Then when your health care provider says that it is ok, you can start to return to your normal activities slowly.

Centers for Disease Control and Prevention

Craniofacial Abnormalities

Craniofacial is a medical term that relates to the bones of the skull and face. Craniofacial abnormalities are birth defects of the face or head. Some, like cleft lip and palate, are among the most common of all birth defects. Others are very rare. Most of them affect how a person's face or head looks. These conditions may also affect other parts of the body.

Treatment depends on the type of problem. Plastic and reconstructive surgery may help the person's appearance.

Eye Movement Disorders

When you look at an object, you're using several muscles to move both eyes to focus on it. If you have a problem with the muscles, the eyes don't work properly.

There are many kinds of eye movement disorders. Two common ones are:

• Strabismus - a disorder in which the two eyes don't line up in the same direction. This results in "crossed eyes" or "walleye."
• Nystagmus - fast, uncontrollable movements of the eyes, sometimes called "dancing eyes"

Some eye movement disorders are present at birth. Others develop over time and may be associated with other problems, such as injuries. Treatments include glasses, patches, eye muscle exercises, and surgery. There is no cure for some kinds of eye movement disorders, such as most kinds of nystagmus.

Eyelid Disorders

What are eyelid disorders?

Eyelid disorders include a variety of conditions that affect your eyelids. Your eyelids protect your eyes and help keep them healthy. When you blink, they spread tears across your eyes and help wash away dirt or dust. You also close your eyelids when something comes near your eyes to protect them from injury.

Like other parts of your body, your eyelids can get infected, become swollen, or develop growths or eye cancer.

The cause depends on the type of disorder. Some eyelid disorders may run in families, while others happen for unknown reasons.

There are many kinds of eyelid problems. They can cause swelling, infection, irritation, or change how your eyelids look or move. Some may cause lumps or growths on or around the eyelids.

Eyelid disorders that cause swelling, redness, or infection include:

• Stye (hordeolum). A small, red, painful bump caused by a bacterial infection in an oil gland. A chalazion is a painless lump that may form after a stye.
• Blepharitis. Makes your eyelids red, itchy, or burning and can cause crusty eyelashes. It's often linked to bacteria or skin conditions like rosacea.
• Periorbital cellulitis. A bacterial infection of the eyelid and nearby skin. If it spreads behind the eye (orbital cellulitis), it needs immediate medical care.

Eyelid disorders that affect eyelid position or movement include:

• Ectropion (eyelids turn out). The inner eyelid is exposed, which can cause irritation or tearing.
• Entropion (eyelids turn in). The eyelashes rub against the eye, causing discomfort or damage.
• Ptosis (drooping eyelid). Often caused by weak muscles, aging, or nerve damage.

Eyelid growths include:

• Xanthelasma. Yellowish patches of cholesterol near the inner corners of the eyelids.
• Papilloma. A benign (noncancerous), wart-like skin growth.
• Basal cell carcinoma. The most common eyelid cancer, often on the lower eyelid.
• Squamous cell carcinoma. A less common but faster-growing skin cancer.
• Sebaceous gland carcinoma. A rare but serious cancer of the eyelid's oil glands.

Eyelid disorders that affect blinking or eyelid movement include:

• Blepharospasm. Eyelid blinking or twitching you can't control.
• Myokymia. A minor, occasional eyelid twitch often caused by fatigue or stress.

Symptoms can vary depending on the condition but may include:

• Feeling like something is in your eye
• Burning or stinging
• Watery or itchy eyes
• Red, swollen eyelids
• Blurry vision

Your eye care specialist may diagnose eyelid disorders during an eye exam. They may also ask about your medical and family history to help find the cause.

Treatment depends on the cause of the disorder. Some eyelid conditions get better on their own or may be related to another health condition. Keeping your eyelids clean can help prevent irritation and infection.

If you need treatment, it may include:

• Warm compresses
• Medicines or ointments
• Eye drops
• Surgery (less common)
• Lifestyle changes, such as getting more sleep or cutting back on caffeine

Facial Injuries and Disorders

Face injuries and disorders can cause pain and affect how you look. In severe cases, they can affect sight, speech, breathing and your ability to swallow. Fractures (broken bones), especially in the bones of your nose, cheekbone and jaw, are common facial injuries.

Certain diseases also lead to facial disorders. For example, nerve diseases like trigeminal neuralgia or Bell's palsy sometimes cause facial pain, spasms and trouble with eye or facial movement. Birth defects can also affect the face. They can cause underdeveloped or unusually prominent facial features or a lack of facial expression. Cleft lip and palate are a common facial birth defect.