Biology
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List of Common Diseases: Most Common Illnesses

Updated October 23, 2017 1.6m views204 items
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.
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  • Acne
    Acne vulgaris is a long term skin condition characterized by areas of blackheads, whiteheads,...  more
  • Allergy
    An allergy is a hypersensitivity disorder of the immune system. Symptoms include red eyes,...  more
  • Antisocial personality disorder
    Antisocial personality disorder is characterized by a pervasive pattern of disregard for, or...  more
  • Attention deficit hyperactivity disorder
    ADHD/ADD
    Attention deficit hyperactivity disorder is a developmental neuropsychiatric disorder in which...  more
  • Altitude sickness
    Altitude sickness—also known as acute mountain sickness, altitude illness, hypobaropathy, "the...  more
  • Alzheimer's disease
    Alzheimer's Disease is a progressive, neurodegenerative disease characterized by loss of...  more
  • Andropause
    Andropause — also known as male menopause — is said to be the result of a gradual drop in...  more
  • Anorexia nervosa
    Anorexia nervosa is an eating disorder characterized by food restriction, odd eating habits or...  more
  • Arthritis
    Arthritis is a form of joint disorder that involves inflammation of one or more joints. There...  more
  • Asperger syndrome
    Asperger syndrome, also known as Asperger's syndrome, Asperger disorder or simply Asperger's,...  more
  • Asthma
    Asthma is a common chronic inflammatory disease of the airways characterized by variable and...  more
  • Autism
    Autism is a neurodevelopmental disorder characterized by impaired social interaction, verbal...  more
  • Avoidant personality disorder
    Avoidant personality disorder, also known as anxious personality disorder, is a Cluster C...  more
  • Back Pain
    Back pain is pain felt in the back that usually originates from the muscles, nerves, bones,...  more
  • Bad Breath

    Bad Breath

    Halitosis
  • Alopecia
    Hair loss or baldness is a loss of hair from the head or body. Baldness can refer to general...  more
  • Bedwetting
    Nocturnal enuresis or nighttime urinary incontinence, commonly called bedwetting or...  more
  • Bipolar disorder
    BD
    Bipolar disorder, also known as bipolar affective disorder, is a mental disorder characterized...  more
  • Bladder cancer
    Bladder carcinoma is a carcinoma arising from the bladder epithelium. Approximately 90% of...  more
  • Body dysmorphic disorder
    BDD
    Body dysmorphic disorder, is a disorder that involves belief that one's own appearance is...  more
  • Borderline personality disorder
    BPD
    Borderline personality disorder is a cluster-B personality disorder, the essential feature of...  more
  • Bone Cancer
  • Brain Cancer
    Brain cancer is a disease of the brain in which cancer cells (malignant) arise in the brain...  more
  • Breast cancer
    Breast cancer is cancer that develops from breast tissue. Signs of breast cancer may include a...  more
  • Brain tumor
    A brain tumor or intracranial neoplasm occurs when abnormal cells form within the brain. There...  more