Blepharitis is inflammation of the eyelids, usually affecting the edges of the eyelids around the eyelashes. It may occur when the oil-secreting glands around the eyelids become blocked or irritated. Blepharitis can cause itching, burning, redness, watering, crusting and a sensation of something being present in the eyes. Some people may also experience blurred vision or sensitivity to light. Although…

Blepharospasm is a condition in which the eyelid muscles contract involuntarily, causing excessive blinking or repeated eyelid spasms. The movements are usually spontaneous and difficult to control. Some people may initially notice occasional eye twitching or increased blinking. In more persistent cases, the eyelids may close involuntarily and interfere with normal activities or vision. When blepharospasm occurs along with dystonia…

Body odor is an unpleasant or noticeable smell that can develop when bacteria living on the skin break down components of sweat. Sweat itself is generally not responsible for most body odor; the interaction between sweat and skin bacteria produces many of the characteristic smells. Body odor can occur anywhere on the body, but it is often more noticeable in…

Body pain is an unpleasant sensation that can affect muscles, joints, bones or other parts of the body. Pain is processed through the nervous system and can develop gradually or suddenly, depending on its underlying cause. Everyone experiences pain differently. Its location, intensity and duration can vary from person to person. Body pain may occur after physical activity, an injury,…

Borderline Personality Disorder (BPD) is a mental health condition associated with difficulties in regulating emotions, self-image, behavior and interpersonal relationships. A person with BPD may experience intense or rapidly changing emotions, impulsive behavior, insecurity, feelings of worthlessness, anxiety and difficulties maintaining stable relationships. Symptoms can vary considerably from one person to another. Some people may experience periods of emotional distress…

Breast cancer occurs when abnormal cells in the breast grow and multiply in an uncontrolled way. Breast cancer can begin in different parts of the breast and, depending on its type and stage, may remain within the breast or spread to nearby lymph nodes or other parts of the body. Breast cancer is much more common in women, although it…

Bronchiectasis is a long-term lung condition in which the airways, also called bronchi, become permanently widened and damaged. Because the airway walls are damaged, mucus can build up and become difficult to clear. This can lead to a persistent cough, increased mucus production and repeated chest infections. Bronchiectasis can affect people differently. Some people have mild symptoms, while others may…

A bunion is a bony prominence that develops near the joint at the base of the big toe. It occurs when the big toe gradually moves toward the smaller toes while the joint at the base of the toe becomes more prominent. The medical term commonly used for this deformity is hallux valgus. A bunion usually develops gradually rather than…

A burn is an injury to the skin or deeper tissues caused by heat, flames, hot liquids, steam, chemicals, electricity, radiation or excessive exposure to sunlight. Burns can range from a minor superficial injury to a serious and potentially life-threatening emergency. The severity depends on factors such as the depth of the burn, the size of the affected area, the…

Burping, also called belching or eructation, is the process of releasing swallowed air or gas from the stomach through the mouth. Occasional burping is normal and often happens after eating or drinking. However, frequent or excessive burping may become uncomfortable or embarrassing. It can sometimes be related to eating habits, swallowed air, certain foods, acid reflux, or an underlying digestive…