Alternative names

bacterial pneumonia


An inflammation of the lungs caused by an infection.

Causes, incidence, and risk factors

Pneumonia is a very common, serious illness and affects about 1 out of 100 people each year. It is caused by many different organisms and can range in seriousness from mild to life-threatening illness. There are different categories of pneumonia. 


Alternative names

diabetes; sugar diabetes 


A disorder caused by decreased production of insulin, or by decreased ability to use insulin. Insulin is a hormone produced by the pancreas that is necessary for cells to be able to use blood sugar. 

Common causes, incidence, and risk factors


Alternative names

blues; dejected; discouragement; gloom; mood changes; sadness 


An emotional state in which there are extreme feelings of sadness, dejection, lack of worth, and emptiness 


Most depression is a reaction to an unhappy event. It is natural to have some depression after a loss such as the death of a relative, or after a major disappointment at home or at work. 

Depression is more prevalent in women than men and is especially common among adolescents. 


Alternative names

carcinoma of the breast . 


A malignant form of cancer that develops in breast tissue. 

Causes, incidence, and risk factors

The most common type of breast cancer begins in the lining of the ducts and is called ductal carcinoma. Another type, called lobular carcinoma, arises in the lobules. For most types of breast cancer the cause is unknown. 

Hepatitis B

Most of those who get hepatitis B will suffer from an inflammation of the liver, called acute hepatitis. Many people with hepatitis B mistake the symptoms for other illnesses, such as the flu, while others are more seriously affected and may miss school or work for months. Other common symptoms include skin rashes and arthritis, nausea, vomiting, loss of appetite, malaise, abdominal pain, and jaundice (yellowing of the eyes and skin). There is no cure for hepatitis B...

Nonspecific Urethritis (NSU) or Nongonoccal Urethritis (NGU)

Chlamydia trachomatous, T. mycoplasma, ureaplasma urealyticum, mycolasma hominis. An estimated quarter of cases are allergic reactions to latex or spermicide. Similar to gonorrhea but usually milder. Urethral discharge is generally thin and clear. Planned Parenthood estimates that half of the women with one of these diseases doesn't know it. NSU/NGU in women can lead to pelvic inflammatory disease and sterility. Penicillin is generally not effective ...

Crabs, Pubic Lice

Pubic lice are just that, lice that has infested your public hair. The most common symptom is intense itching, usually felt mostly at night. Some victims have no symptoms, others may develop an allergic rash. Various shampoos and lotions exist to kill lice, but the best solution is simply to shave off the pubic and hair and shower vigorously afterwards. Nominally through sexual contact, however they may be picked up through use of sheets, towels or ...

Genital Herpes, HSV

Herpes Simplex Virus I and Herpes Simplex Virus II. HSV-I is most often associated with cold sores or fever blisters about the mouth and lips, while HSV-II is associated with sores around the gential area. Herpes is marked by clusters of small, painful blisters on the genitals. After a few days, the blisters burst, leaving small ulcers. In men, the blisters usually appear on the penis, but can appear in the urethra or rectum. In women, they usually ...