Health Encyclopedia
Disease provided by 
Complete Index | Disease | Injury | Nutrition | Poison | Special Topic | Surgery | Symptoms | Test
 |
Abdominal aortic aneurysm 08/28/2008
Aneurysm - aortic Causes, incidence, and risk factors: The exact cause is unknown, but risk factors for developing an aortic aneurysm include: Emphysema Genetic factors High blood pressure High cholesterol Obesity Male gender Smoking An abdominal aortic aneurysm can develop in anyone, but is most often seen in males over 60 who have one or more risk factors. |
|
Achilles tendinitis 07/29/2008
Tendinitis of the heel Causes, incidence, and risk factors: There are two large muscles in the calf, the gastrocnemius, and soleus. These muscles generate the power for pushing off with the foot or going up on the toes. The large Achilles tendon connects these muscles to the heel. These are important muscles for walking. |
|
Achondroplasia 10/11/2007
Achondroplasia is a disorder of bone growth that causes the most common type of growth hormone deficiency . Causes, incidence, and risk factors: Achondroplasia is one of a group of disorders called chondrodystrophies or osteochondrodysplasias. Achondroplasia may be inherited as an autosomal dominant trait, which means that if a child gets the defective gene from one parent, the child will have the disorder. If one parent has achondroplasia, the infant has a 50% chance of inheriting the disorder. |
|
Acne 04/14/2008
Acne vulgaris; Cystic acne; Pimples; Zits Causes, incidence, and risk factors: Acne occurs when tiny holes on the surface of the skin, called pores, become clogged. Each pore is an opening to a canal called a follicle, which contains a hair and an oil gland. Normally, the oil glands help keep the skin lubricated and help remove old skin cells. When glands produce too much oil, the pores can become blocked, accumulating dirt, debris, and bacteria. |
|
Acoustic neuroma 06/12/2009
Vestibular schwannoma; Tumor - acoustic; Cerebellopontine angle tumor; Angle tumor Causes, incidence, and risk factors: An acoustic neuroma is believed to occur when there is a defect in a gene that normally prevents tumors from forming. The cause of the genetic defect is not known. |
|
Acoustic trauma 10/10/2008
Injury - inner ear; Trauma - inner ear; Ear injury Causes, incidence, and risk factors: Acoustic trauma is a common cause of sensory hearing loss . Damage to the hearing mechanisms within the inner ear may be caused by: An explosion near the ear Gunshots Long-term exposure to loud noises (such as loud music or machinery) Symptoms: Hearing loss Usually partial and involving high-pitched sounds May slowly get worse Noises, ringing in the ear ( tinnitus ) Signs and tests: The health care provider will usually suspect acoustic trauma if hearing loss occurs after noise exposure. |
|
Acrodermatitis 04/12/2007
Papular acrodermatitis of childhood; Gianotti-Crosti syndrome; Acrodermatitis - infantile lichenoid; Acrodermatitis - papular infantile; Papulovesicular acro-located syndrome Causes, incidence, and risk factors: The cause of acrodermatitis is poorly understood, but its link with other infections is well- documented. |
|
Actinic keratosis 10/11/2008
Solar keratosis; Sun-induced skin changes - keratosis; Keratosis - actinic (solar) Causes, incidence, and risk factors: Actinic keratosis is caused by sun exposure. It occurs most commonly in fair skin, especially in the elderly and in young people who have light skin. Symptoms: Rough and dry skin lesion Patch or growth on the skin Limited to one area (localized) Located on the face, scalp, back of the hands, chest, or other sun-exposed areas Gray, pink, red (erythematous), or the same color as the skin Begins as flat and scaly areas Later develops a hard and wart-like or gritty, rough, and "sandpapery" surface -- may develop a horn-like texture The skin lesion may be easier to feel than to see. |
|
Acute bilateral obstructive uropathy 01/24/2008
Urethral obstruction; Acute urethral obstruction; Obstructive uropathy - bilateral - acute Causes, incidence, and risk factors: In men, acute bilateral obstructive uropathy is most often a result of an enlarged prostate. |
|
Acute cerebellar ataxia 03/26/2009
Cerebellar ataxia; Ataxia - acute cerebellar; Cerebellitis Causes, incidence, and risk factors: Acute cerebellar ataxia is most common in children, especially those younger than age 3. It often occurs several weeks after a viral illness. Viral infections that may cause this include chickenpox , Coxsackie disease, Epstein-Barr, and mycoplasma pneumonia. Exposure to older insecticides called organophosphates or other toxins may also cause ataxia. |
| Result Pages: | |
