• Biology

List of Common Diseases: Most Common Illnesses

Need a list of common diseases? The most common illnesses are listed here by name, including information about their symptoms. They include the most common communicable diseases and and common infectious diseases. Most common bacterial diseases and common viral diseases can be gotten over quickly or treated medically by a doctor. Since these are so common, there's definitely treatments for these common ailments. For more information about genetic diseases you can see this genetic disorders list. For valuable information on central nervous system disorders see the central nervous system disorders page. What are the most common sicknesses? Finally if you are having any trouble going to the bathroom see the urinary system diseases page.
  • Acne vulgaris is a long term skin condition characterized by areas of blackheads, whiteheads, pimples, greasy skin, and possibly scarring. The resulting appearance may lead to anxiety, reduced  ...more
  • An allergy is a hypersensitivity disorder of the immune system. Symptoms include red eyes, itchiness, and runny nose, eczema, hives, or an asthma attack. Allergies can play a major role in conditions  ...more
  • Antisocial personality disorder is characterized by a pervasive pattern of disregard for, or violation of, the rights of others. There may be an impoverished moral sense or conscience and a history  ...more
  • ADHD/ADD
    Attention deficit hyperactivity disorder is a developmental neuropsychiatric disorder in which there are significant problems with executive functions that cause attention deficits, hyperactivity, or  ...more
  • Altitude sickness—also known as acute mountain sickness, altitude illness, hypobaropathy, "the altitude bends", or soroche—is a pathological effect of high altitude on humans, caused by acute  ...more
  • Alzheimer's Disease is a progressive, neurodegenerative disease characterized by loss of function and death of nerve cells in several areas of the brain leading to loss of cognitive function such as  ...more
  • Andropause — also known as male menopause — is said to be the result of a gradual drop in testosterone which is an androgen. The medical community is currently debating whether or not men really do  ...more
  • Anorexia nervosa is an eating disorder characterized by food restriction, odd eating habits or rituals, obsession with having a thin figure, and an irrational fear of weight gain. It is accompanied  ...more
  • Arthritis is a form of joint disorder that involves inflammation of one or more joints. There are over 100 different forms of arthritis. The most common form of arthritis is osteoarthritis, a result  ...more
  • Asperger syndrome, also known as Asperger's syndrome, Asperger disorder or simply Asperger's, is an autism spectrum disorder that is characterized by significant difficulties in social interaction  ...more
  • Asthma is a common chronic inflammatory disease of the airways characterized by variable and recurring symptoms, reversible airflow obstruction and bronchospasm. Common symptoms include wheezing,  ...more
  • Autism is a neurodevelopmental disorder characterized by impaired social interaction, verbal and non-verbal communication, and restricted and repetitive behavior. Parents usually notice signs in the  ...more
  • Avoidant personality disorder, also known as anxious personality disorder, is a Cluster C personality disorder recognized in the Diagnostic and Statistical Manual of Mental Disorders handbook as  ...more
  • Back pain is pain felt in the back that usually originates from the muscles, nerves, bones, joints or other structures in the spine. However, internal structures such as the gallbladder and pancreas  ...more
  • Bad Breath

    Halitosis
  • Hair loss or baldness is a loss of hair from the head or body. Baldness can refer to general hair loss or androgenic alopecia. Some types of baldness can be caused by alopecia areata, an autoimmune  ...more
  • Nocturnal enuresis or nighttime urinary incontinence, commonly called bedwetting or sleepwetting, is involuntary urination while asleep after the age at which bladder control usually occurs.  ...more
  • BD
    Bipolar disorder, also known as bipolar affective disorder, is a mental disorder characterized by periods of elevated mood and periods of depression. The elevated mood is significant and is known as  ...more
  • Bladder carcinoma is a carcinoma arising from the bladder epithelium. Approximately 90% of the bladder carcinomas are transitional cell carcinomas. The remainder are squamous cell carcinomas,  ...more
  • BDD
    Body dysmorphic disorder, is a disorder that involves belief that one's own appearance is unusually defective and is worthy of being hidden or fixed. This belief manifests in thoughts that many times  ...more
  • BPD
    Borderline personality disorder is a cluster-B personality disorder, the essential feature of which is a pattern of marked impulsivity and instability of affects, interpersonal relationships, and  ...more
  • Brain cancer is a disease of the brain in which cancer cells (malignant) arise in the brain tissue. Cancer cells grow to form a mass of cancer tissue (tumor) that interferes with brain functions such  ...more
  • Breast cancer is cancer that develops from breast tissue. Signs of breast cancer may include a lump in the breast, a change in breast shape, dimpling of the skin, fluid coming from the nipple, or a  ...more
  • A brain tumor or intracranial neoplasm occurs when abnormal cells form within the brain. There are two main types of tumors: malignant or cancerous tumors and benign tumors. Cancerous tumors can be  ...more