Dementia describes a group of symptoms affecting thinking, concentration, social abilities, social behavior and problems with memory loss. Other symptoms are impaired judgment and speech, changes in personality, weakness and uncoordinated movement.Dementia involves damage of nerve cells in several areas of the brain.Alzheimer's disease is the most common cause of progressive dementia. Reason of Alzheimer's disease are plaques (clumps of a protein called beta-amyloid) in the ...

The immune system is highly complex and very important for our health. It is responsible for the elimination of invaders (antigens) such as infectious organisms. The cells of the immune system can kill bacteria, parasites, tumor cells and virus-infected cells.One of the most common signs of immunodeficiency is an increased susceptibility to infections and other health problems to occur more easily.Causes of immunodeficiency are an acidification of the body, metabolic and ho...

Glaucoma is a group of eye conditions that damage the optic nerve, which is important to good vision. This damage is caused by an increased pressure in the eye and can lead to blindness. Mostly there are no warning signs. The effect is so gradual that you may not notice a change in vision until the condition is at an advanced stage.The symptoms of glaucoma are patchy blind spots in your side (peripheral) or central vision, tunnel vision, blurred vision, halos around lights, headach...

Dermatitis is an irritation of the skin and not contagious. The most common types of this condition are seborrheic dermatitis and contact dermatitis. Each type of dermatitis tends to occur on a different part of the body.Rashes are often a sign of other diseases. Symptoms include itchiness (pruritus), blisters, oozing, crusting, small bumps, swollen and flaking or raw skin and redness.Common causes of skin rashes are infections, allergies, soap and detergents, immune system ...

Cataract is a clouding of the normally clear lens of the eye that impairs vision. It occurs, when there is a buildup of protein in the lens that makes it cloudy. Cataracts usually form slowly and don't disturb the eyesight early on.As this eye disease continues to develop, the clouding becomes denser and involves a greater part of the lens, preventing a sharply defined image from reaching the retina. As a result, the vision becomes blurred. Cataracts usually develop in both eyes. H...

Acne, medically known as acne vulgaris, is a skin disease that occurs when the openings of hair follicles become clogged and blocked with oil secretions from the sebaceous glands, dead skin cells or bacteria.Acne most commonly appears on the face, neck, shoulders, chest and back, because here are the skin areas with the largest number of oil glands. The symptoms are whiteheads, blackheads, pimples, papules, pustules, nodules and painful cysts.Acne often leads to scarring of ...

Signs of circulatory weakness are cold hands and feet, low blood pressure, blurred vision and flickering eyes, palpitations, dizziness, ringing in the ears, shortness of breath, depressive moods, lightheadedness, fainting, lethargy, lack of concentration, nausea and fatigue.Circulatory weakness can signal an underlying problem. In severe cases it can be a sign of serious and life-threatening disorders.Causes are exhaustion, stress and mental problems, lack of sleep, cardiac ...

Carpal tunnel syndrome is a painful hand and arm condition caused by a pinched median nerve in the wrist. It starts with an aching in the wrist that extend to the hand and forearm.Chronic carpal tunnel syndrome can lead to atrophy of the hand muscles, particularly those near the base of the thumb in the palm of the hand.The carpal tunnel is a narrow passageway located on the palm side of the wrist. This tunnel protects the main nerve to the hand and tendons that bend the fin...

Insomnia can affect you both mentally and physically and is a disorder that make it hard to fall asleep or to stay asleep. Sleeplessness can sap not only your energy level and mood but also your health and quality of life.Women are much more likely to experience insomnia. Hormonal shifts during the menstrual cycle and in menopause play a role. During menopause, night sweats and hot flashes often disturb sleep.The complications of insomnia are lower performance on the job, s...

Tinnitus involves the annoying sensation of hearing sound when no external sound is present and is heard only by the patient himself. It isn't a condition itself - it's a symptom of an underlying condition.Tinnitus may be present all the time, or it may come and go. The consequence are frequent lapses in concentration, imbalance, insomnia, fatigue, memory problems, depression, anxiety, psychological distress and irritability.The symptoms include phantom noises in one or bot...

Osteoarthritis and arthrosis occur when the protective hard and slick surface of the cartilage of the joint becomes rough and wears down more quickly than the body replicates. This leads to pain and inflammation in the joint.Osteoarthritis and arthrosis can damage any joint in the body, but most commonly they affect joints in the hands, knees, hips, neck and lower back. In severe cases, joints may become twisted and deformed.The symptoms often develop slowly, worsen over ti...

Dizziness is a term that is used to describe feeling faint, lightheaded or weak.Vertigo is a feeling that you or your surroundings are moving when there is no actual movement. You have the feeling as though you are off balance, spinning, whirling, falling or tilting.Dizziness and vertigo can cause double vision, slurred speech, nausea, vomiting and balance problems. The symptoms results from a change in the activity of the balance structures in the inner ear or in the balanc...