Diseases That Start With H

Diseases are complex and multifaceted conditions that can affect any part of the body, including the organs, tissues, and cells. They can be caused by microorganisms like bacteria and viruses, environmental factors such as pollution and radiation, or by genetic abnormalities. The symptoms of a disease can vary widely depending on the type of disease and its severity. Diagnosis and treatment of diseases typically involve a combination of medical expertise, laboratory tests, and imaging techniques.

When I set out to compile a detailed list of all medical conditions for each alphabet, I knew it was going to be a daunting task. My approach was to start with an extensive search of medical terminologies to ensure that each disease was categorized correctly. Then, I verified each medical term by consulting various medical journals and websites.

So, let’s begin exploring this list of diseases starting with H!

105 Diseases That Start With H

And here’s the list of diseases that begin with H letter.

Hemorrhoid

Hemorrhoid refers to the inflamed and swollen veins in the rectum and anus. This condition is caused by excessive pressure on the veins leading to their enlargement, and it usually occurs in people who sit for prolonged periods or strain during bowel movement.

Hanhart syndrome

Hanhart syndrome is a rare genetic disorder characterized by the absence or partial absence of thumbs and forearm bones. Other features may include delayed development, hearing impairment, and abnormalities of the heart, eyes, and kidneys.

Hypomelanotic disorder

Hypomelanotic disorder is an umbrella term used to describe a group of conditions causing depigmentation (loss of skin color) in affected individuals. Examples of hypomelanotic disorders include tuberous sclerosis, hypomelanosis of Ito, and piebaldism.

Hereditary coproporphyria

Hereditary coproporphyria is a rare genetic disorder affecting the synthesis of heme, a component of hemoglobin. Symptoms may include abdominal pain, vomiting, and muscle weakness. The condition is often triggered by certain drugs or dietary factors.

Hageman factor deficiency

Hageman factor deficiency, also known as factor XII deficiency, is a rare bleeding disorder caused by a deficiency of the Hageman factor, a blood clotting protein. Affected individuals may experience spontaneous bruising, bleeding after mild trauma, and prolonged bleeding after surgery or dental procedures.

Hot tub folliculitis

Hot tub folliculitis, also known as pseudomonas folliculitis, is a common skin infection caused by Pseudomonas aeruginosa bacteria. Symptoms may include itchy, red bumps and pustules on the skin, especially in areas covered by swimsuits or bathing suits.

Hyperopia

Hyperopia, also known as farsightedness, is a common refractive error of the eye where distant objects appear clearer than nearby objects. This condition is caused by an eye that is too short, or a cornea that is too flat. Symptoms may include headaches, eye strain, and difficulty seeing clearly up close.

Hypolipoproteinemia

Hypolipoproteinemia is a rare disorder characterized by low levels of lipoproteins, the substances that transport cholesterol and other lipids in the blood. Affected individuals may be at increased risk of developing cardiovascular disease and other health problems.

Holocarboxylase synthetase deficiency

Holocarboxylase synthetase deficiency is a rare genetic disorder affecting the metabolism of biotin, a B vitamin essential for the activity of several enzymes in the body. Symptoms may include seizures, developmental delay, and skin rashes.

Hyperlysinemia

Hyperlysinemia is a rare metabolic disorder characterized by high levels of lysine, an amino acid, in the blood and urine. Symptoms may include developmental delay, seizures, and intellectual disability.

Hypercalcinuria idiopathic

Hypercalcinuria idiopathic refers to elevated levels of calcium in the urine with no identifiable underlying cause. This condition may increase the risk of developing kidney stones and other health problems over time.

Histidinemia

Histidinemia is a rare metabolic disorder characterized by high levels of histidine, an amino acid, in the blood and urine. Most individuals with this condition are asymptomatic, but some may experience developmental delay or intellectual disability.

Hyperbilirubinemia

Hyperbilirubinemia refers to elevated levels of bilirubin, a pigment produced during the breakdown of red blood cells, in the blood. This condition can lead to jaundice, a yellowing of the skin and whites of the eyes, and other health problems if left untreated.

Hereditary carnitine deficiency

Hereditary carnitine deficiency is a rare genetic disorder affecting the transport of fats into the mitochondria, the energy-producing centers of cells. Symptoms may include muscle weakness, low blood sugar, and heart problems.

Human papillomavirus

Human papillomavirus (HPV) is a group of viruses that can cause warts and certain types of cancer, including cervical, anal, and throat cancer. HPV is spread through skin-to-skin contact, and can sometimes be prevented by vaccination.

Hearing impairment

Hearing impairment, also known as deafness, is a condition where individuals have difficulty hearing or are completely unable to hear sound. This condition can be caused by a variety of factors, including genetics, age, exposure to loud noise, and certain medical conditions or medications.

Hallervorden

Hallervorden-Spatz syndrome, also known as pantothenate kinase-associated neurodegeneration, is a rare progressive disorder affecting movement, vision, and speech. Symptoms typically appear in childhood or adolescence, and may include dystonia, Parkinsonism, and epilepsy.

Hereditary amyloidosis

Hereditary amyloidosis is a group of diseases caused by the accumulation of amyloid, an abnormal protein, in different organs and tissues throughout the body. Symptoms vary depending on the type of amyloidosis and may include heart failure, kidney failure, and neuropathy.

Hyper-IgD syndrome

Hyper-IgD syndrome is a rare genetic disorder characterized by recurrent fever, skin rashes, joint pain, and other symptoms caused by elevated levels of immunoglobulin D in the blood. Episodes may be triggered by stress, illness, or other factors.

Hepatitis E

A viral liver disease caused by the Hepatitis E virus that spreads through contaminated food and water.

Hypertrichosis lanuginosa congenita

A rare genetic disorder that causes excessive hair growth all over the body.

Hyperphenylalaninemia

A genetic disorder that causes high levels of phenylalanine in the blood, leading to intellectual disability and other health problems.

Hemimegalencephaly

A rare neurological condition that causes one half of the brain to grow larger than the other.

Hereditary ceroid lipofuscinosis

A group of inherited disorders that cause a buildup of fatty deposits in the brain and other tissues, leading to neurological problems.

Hepatitis B

A viral infection that affects the liver and can lead to liver failure, cancer, and other severe health problems.

Hypermetropia

A common eye condition that causes difficulty seeing things up close.

Hypopituitary dwarfism

A condition caused by a deficiency of growth hormone, resulting in stunted growth and other health problems.

Hyperostosis corticalis generalisata

A rare genetic disorder that causes excessive bone growth and thickening.

Hairy cell leukemia

A rare type of cancer that affects white blood cells and leads to excessive hair-like projections on the cells.

Histapenia

An uncommon condition where there are low levels of histamine in the body, leading to a variety of symptoms.

Hyperammonemia

A condition where there are excessive levels of ammonia in the blood, leading to neurological problems and other health issues.

Hemangioblastoma

A rare type of brain tumor that originates from blood vessels in the brain.

Hermaphroditism

A condition where an individual has both male and female reproductive organs.

Hemoglobin SC disease

A type of sickle cell anemia where an individual has both hemoglobin S and hemoglobin C.

Herpes encephalitis

A rare but serious viral infection that affects the brain and can cause seizures, fever, and other neurological problems.

Hodgkin lymphoma

A type of cancer that affects the lymphatic system and can cause enlarged lymph nodes, fever, and other symptoms.

Hydrocephalus

A condition where there is an excessive buildup of cerebrospinal fluid in the brain, leading to pressure and other neurological problems.

HMG-CoA lyase deficiency

A rare genetic disorder that affects the breakdown of proteins and fats in the body, leading to a variety of health problems.

Hepatic fibrosis

A condition where there is excessive scar tissue buildup in the liver, leading to liver damage and other health problems.

Hepatitis A

A viral infection that affects the liver and is typically spread through contaminated food and water.

His bundle tachycardia

A type of irregular heartbeat that originates from the His bundle in the heart.

Hypohidrotic Ectodermal Dysplasia

A rare genetic disorder that affects the development of hair, teeth, and sweat glands, leading to a variety of health problems.

Hypersensitivity type I

A type of allergic reaction that occurs when the immune system overreacts to a harmless substance.

Hyperadrenalism

A condition caused by excessive production of adrenal hormones, leading to a variety of health problems.

Hypochondroplasia

A genetic disorder that causes stunted growth and other skeletal problems.

Heparin-induced thrombopenia

An uncommon but serious side effect of the blood thinner heparin, where the immune system attacks and destroys platelets in the blood.

Hairy tongue

A condition where the tongue appears hairy and discolored due to overgrowth of papillae.

Hyperthyroidism

A thyroid disorder characterized by excess production of thyroid hormone causing weight loss and intolerance to heat.

Hepadnovirus D

A type of virus that infects the liver and can cause chronic hepatitis.

Heart disease

A conditions that affects the heart’s ability to function properly and can lead to heart attacks or heart failure.

Hypothyroid

A thyroid disorder characterized by insufficient production of thyroid hormone causing weight gain and fatigue.

Hepatitis

A liver inflammation caused by viral infections, alcohol or drug abuse, or autoimmune diseases.

Hereditary hemorrhagic telangiectasia

A rare genetic disorder that leads to weakened blood vessels and can cause nosebleeds, gastrointestinal bleeding, and stroke.

Hepatitis C

A blood-borne viral infection that targets the liver and can lead to chronic liver disease.

Hygroma cervical

A cystic mass that forms near the neck and can cause breathing difficulties and swelling.

Hydranencephaly

A rare condition where the brain’s cerebral hemispheres are absent and replaced by fluid.

Hypogonadism

A condition where the body doesn’t produce sufficient amounts of sex hormones, leading to developmental issues and lack of sexual development.

Heavy metal poisoning

A toxic condition caused by exposure to excessive amounts of heavy metals such as lead or mercury.

Hypercalcemia

A disorder where there is too much calcium in the blood, leading to fatigue, vomiting, and kidney stones.

Harpaxophobia

An irrational fear of being robbed or harmed by others.

Hypoglycemia

A condition where blood sugar levels are too low, leading to weakness, confusion, and seizures.

Hypertrophic cardiomyopathy

A genetic heart condition where the heart muscle becomes thick, leading to arrhythmias and sudden death.

Hemorrhagiparous thrombocytic dystrophy

A rare genetic disorder that causes low platelet counts and excessive bleeding.

Hyperhomocysteinemia

A genetic condition where there is an excess of homocysteine in the blood, leading to heart disease and stroke.

Hypercholesterolemia

A condition where there is too much cholesterol in the blood, leading to plaque buildup in the arteries and heart disease.

Hyperaldosteronism

A disorder where there is too much aldosterone hormone in the body, leading to high blood pressure and fluid retention.

Hypoaldosteronism

A disorder where there is insufficient aldosterone hormone production, leading to low blood pressure and dehydration.

Hyperkeratosis lenticularis perstans

A rare skin condition characterized by small, raised bumps on the skin.

Hyperlipoproteinemia type IV

A genetic condition characterized by high levels of fats in the blood, leading to increased risk of heart disease.

Hypoadrenalism

A condition where the adrenal glands don’t produce enough hormones, leading to fatigue, low blood sugar, and low blood pressure.

Hypocomplementemic urticarial vasculitis

An autoimmune disorder that affects the blood vessels and skin, leading to rashes and joint pain.

Hypodysfibrinogenemia

A rare bleeding disorder caused by dysfunctional fibrinogen production, leading to excessive bleeding.

Hepatic veno-occlusive disease

A rare liver disease characterized by obstruction of the small veins in the liver leading to liver failure.

Human granulocytic ehrlichiosis

A tick-borne bacterial infection that affects the white blood cells and can cause headache, fever, and rash.

Herpangina

A viral infection that causes sores in the mouth and throat, most commonly affecting young children.

Hypercementosis

A condition where there is an excess of cementum on the roots of teeth causing the teeth to become longer.

Hypokalemic periodic paralysis

A rare muscle disorder causing episodes of muscle weakness due to low levels of potassium in the blood.

Histadelia

A metabolic disorder characterized by high levels of histamine in the blood resulting in anxiety, hyperactivity, and depression.

Hypokalemic sensory overstimulation

A condition associated with hypokalemic periodic paralysis causing abnormal sensitivity to noise, touch, and light.

Harding ataxia

A rare genetic disorder that affects the nervous system causing progressive muscle wasting, uncoordinated movements, and speech difficulties.

Herpes zoster oticus

A viral infection that affects the ear causing painful blisters, hearing loss, and facial paralysis.

Heterotaxia

A rare congenital condition where the internal organs are in abnormal positions within the body.

Hartnup disease

An inherited metabolic disorder characterized by the abnormal absorption and excretion of amino acids causing skin rashes and neurological symptoms.

Hip luxation

A condition where the ball and socket joint of the hip dislocate causing pain, immobility, and abnormal gait.

Hydantoin antenatal infection

An infection in the fetus caused by the use of hydantoin drugs during pregnancy.

Histiocytosis

A rare disorder where abnormal cells build up in tissues and organs leading to organ damage and dysfunction.

Hyperreflexia

A condition where the reflexes of the body become exaggerated due to damage or dysfunction of the nervous system.

Hip dysplasia

A condition where the hip joint does not develop correctly leading to abnormal movement and pain.

Heart aneurysm

A dilation or bulge in the wall of the heart that can rupture causing bleeding within the heart or around it.

Hemophilic arthropathy

A condition where joint pain and inflammation occur as a result of repeated bleeding into the joints in people with hemophilia.

Hemosiderosis

A condition where there is an abnormal accumulation of iron in the body causing organ damage and dysfunction.

Horton disease

A type of headache caused by inflammation of the blood vessels in the head leading to severe pain and vision changes.

Hepatitis D

A viral infection that can occur as co-infection with hepatitis B leading to severe liver damage and dysfunction.

Hemangiopericytoma

A rare type of cancer originating from cells surrounding blood vessels causing tumors to form.

Hemophobia

An intense fear or avoidance of blood causing anxiety, dizziness, and panic attacks.

HIV

A viral infection that attacks the immune system and can lead to acquired immunodeficiency syndrome (AIDS) if left untreated.

Herpes zoster

A viral infection that causes a painful skin rash and blisters often seen in older adults.

Hereditary hearing disorder

A genetic condition that causes hearing loss and impairment due to abnormalities in the inner ear.

Hypervitaminosis A

A condition where there is an excess of vitamin A in the body leading to toxicity and dysfunction of various organs.

Hemoglobinopathy

A disease that affects the structure and function of hemoglobin in the blood causing anemia.

Hypertensive retinopathy

A condition where high blood pressure damages the blood vessels in the retina causing vision problems and blindness.

Hypertryptophanemia

A rare inherited metabolic disorder caused by an excess of the amino acid tryptophan in the blood leading to intellectual disability and neurological symptoms.

Hallux valgus

A condition where the big toe shifts laterally causing a bony lump to form at the base of the toe.

Hyperkalemia

A condition where there is too much potassium in the blood causing muscle weakness, heart palpitations, and abnormal heart rhythms.

Wrapping Up

And that’s our list of H diseases.

I approached the task of compiling a complete list of diseases that start with every alphabet with great enthusiasm and dedication. I committed myself to patiently studying and researching every possible ailment to ensure that my list was as comprehensive as possible, taking into account every medical terminology that I encountered during my research.

The study of diseases highlights the importance of an integrated healthcare system aimed at combating them. This necessitates a coordinated approach between the government, NGO’s, medical professionals, and the individual in embracing healthy living practices as well as risk reduction strategies to combat the scourge of diseases.

Hope this post on diseases beginning with H alphabet has been useful to you!