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People with AIDS have damaged immune systems, leading to severe illnesses called opportunistic infections. Acquired immunodeficiency syndrome (AIDS) is the last stage of a disease caused by two lentiviruses, human immunodeficiency virus types 1 and 2 (HIV-1 and HIV-2). Origin of HIV Most emerging diseases affecting humans come from wildlife; it is often human behavior...

What is yellow discharge?  It is normal for women to have discharge throughout their monthly cycle. However, yellow discharge accompanied by a fishy smell may be a sign of a bacterial or sexually transmitted infection. Vaginal discharge is normal. It's the body’s way of cleaning and flushing bacteria out of the vagina. This discharge normally...

What do your kidneys do? Stage 1 kidney disease causes mild damage to your kidneys. Kidney disease cannot be cured. When you have chronic kidney disease, you slowly lose kidney function over the course of a few years. Stage 1 kidney disease cannot be cured. It’s likely that chronic kidney disease will progress from stage...

What is tinnitus? Tinnitus is when you hear ringing or other noises — like roaring or humming — in one or both ears. Many times tinnitus lasts for a few seconds to minutes, but other times it may be permanent. You may think of tinnitus as the ringing in your ears the day after a...

What is the fastest way to recover from vomiting?  Vomiting can be a disarming — sometimes even violent — experience. Settle your stomach after vomiting by slowly easing your way into drinking clear fluids and eating mild foods. Vomiting can be a disarming — sometimes even violent — experience. It’s an event that you likely...

Most people experience migraine episodes 2-4 times a month Migraines of any frequency are not normal. Most people experience migraine episodes 2-4 times a month while others may only have 1-2 episodes a year. Migraines can be classified into distinct categories based on the number of episodes: Acute or episodic migraine: 1-14 of fewer migraine...

Certain factors may trigger an asthma attack in susceptible individuals. Though asthma symptoms may come on suddenly without any prior noticeable change, sometimes, an asthma attack typically starts with a few early warning signs. These are caused by changes in the airways that happen before or at the very beginning of an asthma attack. The...

Atopic and contact dermatitis are two of the commonest types of dermatitis. It generally begins as itching or irritation and redness of the skin.  The word dermatitis refers to inflammation (redness and swelling) of the skin. Dermatitis includes various skin conditions that cause irritation or rashes on the skin. It generally causes no serious harm to the body and does...

Which drugs can cause schizophrenia? Schizophrenia is one of the most common mental illnesses. Although drug use does not cause schizophrenia, there is unassailable evidence that the two are closely related. Schizophrenia is one of the most common mental illnesses. It causes you to lose touch with reality, affecting your ability to distinguish between what’s...

What is atopic dermatitis? What is eczema? Both atopic dermatitis and eczema can cause itchy, flaky skin. Atopic dermatitis and eczema both refer to skin conditions. Atopic dermatitis is a cause of eczema, which refers to skin conditions that cause inflammation and irritation. The terms are sometimes used interchangeably. Atopic dermatitis is a common chronic...