Health conditions and diseases starting with H Find trusted details on symptoms causes and treatments to take charge of your health with confidence
High-density lipoprotein (HDL) deficiency is a medical condition characterized by abnormally low levels of HDL cholesterol in the blood. HDL cholesterol is often referred to as “good cholesterol” because it helps remove excess cholesterol from the bloodstream, reducing the risk of cardiovascular diseases. Causes of HDL Deficiency Several factors can contribute to low HDL cholesterol
Hidradenitis suppurativa (HS) is a chronic inflammatory skin condition characterized by painful lumps that develop under the skin, typically in areas where skin rubs together such as the armpits, groin, buttocks, and under the breasts. HS is also known as acne inversa and often presents as recurring, inflamed nodules that may rupture and cause scarring.
A hiatal hernia with reflux esophagitis is a medical condition that combines a structural abnormality with inflammation of the esophagus. This condition often leads to discomfort, digestive issues, and potential complications if untreated. Understanding the causes, symptoms, and treatment options is crucial for effective management. What is a Hiatal Hernia? A hiatal hernia occurs when
Heterozygous familial hypercholesterolemia (HeFH) is a genetic disorder characterized by high cholesterol levels, particularly low-density lipoprotein cholesterol (LDL-C), from birth. This condition significantly increases the risk of premature cardiovascular disease (CVD) if left untreated. Causes of HeFH HeFH is caused by mutations in genes responsible for regulating cholesterol metabolism. The primary genes implicated are: Individuals
Heterotopic ossification (HO) is the abnormal growth of bone in non-skeletal tissues, such as muscles, tendons, or soft tissues. This condition typically occurs following trauma, surgery, or neurological injury. HO can significantly impact mobility and cause discomfort, necessitating early diagnosis and appropriate management. Causes of Heterotopic Ossification The development of HO is linked to several
Herpes Zoster Ophthalmicus (HZO) is a viral infection caused by the varicella-zoster virus, the same virus responsible for chickenpox. When reactivated in the ophthalmic branch of the trigeminal nerve, this infection can severely affect the eye and surrounding areas, posing risks of vision loss if untreated. Causes and Risk Factors HZO is triggered by the
Herpes zoster keratitis is an ocular condition resulting from the reactivation of the varicella-zoster virus (VZV). This infection primarily affects the cornea, leading to inflammation and potential visual impairment if untreated. Understanding its causes, symptoms, and treatment options is crucial for effective management. Causes of Herpes Zoster Keratitis Herpes zoster keratitis develops when the VZV,
Herpes zoster hepatitis is a rare yet serious condition that occurs when the varicella-zoster virus (VZV) causes inflammation of the liver. While VZV is commonly known for causing chickenpox and shingles, in some cases, it can lead to hepatitis, especially in immunocompromised individuals. Causes of Herpes Zoster Hepatitis Herpes zoster hepatitis is triggered by the
Herpes zoster, commonly known as shingles, is a viral infection caused by the varicella-zoster virus (VZV). This virus is the same one responsible for chickenpox. Once a person recovers from chickenpox, the virus remains dormant in the nervous system and can reactivate years later as shingles. Causes of Herpes Zoster Herpes zoster occurs when the
Herpes simplex keratoconjunctivitis is an ocular condition caused by the herpes simplex virus (HSV), typically HSV-1. This viral infection primarily affects the cornea and conjunctiva, leading to inflammation, irritation, and potential visual impairment. Understanding its causes, symptoms, and treatment is essential for effective management and prevention of complications. Causes of Herpes Simplex Keratoconjunctivitis The primary