Aslam Clinic

Digital Care

Aslam Clinic

Digital Care

Skip to content

Aslam ClinicWikiAslam Clinic Wiki — home

Glossary Quizzes About Contact

General Medicine Cardiology Neurology Orthopedics Gastroenterology Endocrinology Pulmonology Dermatology Pediatrics Women's Health Infectious Diseases Nephrology & Urology

Home
Glossary
H

Medical glossary

227 words and abbreviations, explained without jargon. Every one of them also appears inside our articles — hover or tap the dotted underline and the definition comes to you, so you never have to leave what you were reading.

All
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

H

HabitHabits, Habit formation, Habitual behaviourA behaviour that has become automatic, set off by a familiar situation without much thought. Habits form by repeating the same action in the same context.
HaemoglobinHemoglobin, Hb, HgbHaemoglobin is the iron-containing protein inside red blood cells that binds oxygen in the lungs and releases it to the tissues. Its concentration in blood is the number used to diagnose anaemia.
Hallucination

Hallucinations, Hearing voices, Seeing things

Seeing, hearing, smelling, tasting or feeling something that seems completely real but exists only in the mind. Hearing voices is the most common kind.

HbA1cGlycated haemoglobin, A1c, Three-month sugar testHbA1c measures the proportion of haemoglobin that has sugar stuck to it, which reflects the average blood glucose over roughly the past three months. It needs no fasting and is used both to diagnose diabetes and to judge how well it is controlled.

HyperglycaemiaHigh blood sugar, HyperglycemiaBlood sugar that is too high. It builds up slowly and often causes thirst, frequent urination and tiredness.

HypertensionHigh blood pressure, Blood pressure ka marzHypertension is blood pressure that stays high enough, over repeated proper measurements, to damage the arteries over time. It almost never causes symptoms, which is why it is found by measuring rather than by feeling unwell.

HypervigilanceHyperarousal, Always on edge, Easily startledBeing constantly on guard and scanning for danger even when safe — jumpy, easily startled and unable to relax. It is a common part of PTSD and anxiety.

HypoglycaemiaLow blood sugar, Hypo, HypoglycemiaBlood sugar that has fallen too low, usually below 70 mg/dL. It comes on within minutes and needs sugar immediately.

Hypoglycaemia unawarenessImpaired awareness of hypoglycaemiaLosing the early warning symptoms of low blood sugar, so the first sign is confusion or collapse rather than shaking and sweating.

HypomaniaHypomanic episode, HypomanicA milder form of mania: several days of raised or irritable mood, more energy and less need for sleep, noticeable to others but without psychosis or the need for hospital.

HypothyroidismUnderactive thyroid, Low thyroidHypothyroidism means the thyroid gland is producing too little thyroid hormone, so the body's processes run slow. Tiredness, weight gain, feeling cold, constipation and dry skin are typical, and it is treated with a single daily tablet.

Aslam ClinicWikiAslam Clinic Wiki — home

Health, explained plainly. Written for Pakistan and checked by the clinic’s doctors before it is published.

support@aslam.clinic
+92 308 0429292

Aslam Clinic & Al-Shifa Laser Eye Center, Mohalla Masjid Siddique, Circular Road, Jalalpur Jattan

The wiki

All specialties
Medical glossary
Search
Who writes this
Publishing principles
About the wiki
RSS feed

Popular sections

General Medicine
Cardiology
Neurology
Orthopedics
Gastroenterology
Endocrinology

Aslam Clinic

Book an appointment
Find a doctor
Services
Store

© 2026 Aslam Clinic · wiki.aslam.clinic

Privacy
Terms
Editorial policy

Book now