Conditions A–Z
Understand what you're dealing with
Straightforward, source-linked information — symptoms, causes, what works, and when to get help. Written by our editor from NHS and UK regulatory sources; not clinically reviewed.
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Dry eye
Dry eye disease happens when your tears can’t keep the eye surface comfortable — usually because the oily laye…
Read more →Blepharitis
Blepharitis is inflammation of the eyelid margins — crusty, red, itchy lids, often worse on waking. It’s chron…
Read more →Weight & obesity
When weight starts affecting health — blood pressure, blood sugar, joints, sleep, energy — it becomes a medica…
Read more →Erectile dysfunction
Difficulty getting or keeping an erection affects around half of men over 40 at some point. It’s very treatabl…
Read more →Hair loss (male pattern)
Male pattern hair loss is hormonal and genetic, affecting half of men by 50. Evidence-based treatments exist —…
Read more →Tiredness & low energy
Persistent tiredness is one of the most common reasons people see a GP. Often it’s lifestyle and recoverable; …
Read more →Male hormone health
Fatigue, low libido and low mood can reflect low testosterone — but many other causes exist too, which is why …
Read more →Premature ejaculation
Finishing sooner than you or your partner would like is common and treatable with prescription options and pra…
Read more →Acne
Acne affects most teenagers and many adults. Persistent or scarring acne responds well to prescription treatme…
Read more →Hay fever & allergies
Seasonal allergic rhinitis causes sneezing, itchy eyes and a blocked nose when pollen counts rise — very treat…
Read more →Stop smoking
Quitting smoking is one of the best things you can do for your health, and combining behavioural support with …
Read more →Thrush
Thrush is a common yeast infection causing itching and discharge. It is easily treated with antifungal medicin…
Read more →Genital herpes
Genital herpes causes recurrent painful blisters. Antiviral tablets shorten outbreaks and can reduce how often…
Read more →Period delay
Prescription tablets can safely postpone a period for holidays, exams or events — if started at the right time…
Read more →Acid reflux & heartburn
Reflux happens when stomach acid flows back into the oesophagus — causing burning, bloating and a sour taste. …
Read more →Migraine
Migraine is more than a headache — it often includes nausea, light sensitivity and throbbing pain on one side.…
Read more →Travel health & malaria
Travel medicines prevent malaria, motion sickness and common travel-related illness — planned weeks before dep…
Read more →Cystitis & UTI
Bladder infections cause burning urination and frequent urges to pass urine — common in women and usually quic…
Read more →Eczema & dermatitis
Eczema causes itchy, inflamed skin that flares with triggers like stress, soaps and weather. Most mild-to-mode…
Read more →Genital warts
Genital warts are caused by HPV and appear as small lumps or clusters. They are treatable with prescription to…
Read more →PCOS (now called PMOS)
PCOS, which the NHS now calls polyendocrine metabolic ovarian syndrome (PMOS), affects around 1 in 10 UK women…
Read more →Sleep apnoea
Obstructive sleep apnoea causes repeated breathing pauses during sleep — loud snoring, daytime sleepiness and …
Read more →Endometriosis
Endometriosis is tissue similar to womb lining growing outside the uterus — causing painful periods, pain duri…
Read more →Jet lag
Jet lag happens when your body clock is out of sync after crossing time zones, causing poor sleep, fatigue and…
Read more →Type 2 diabetes
Type 2 diabetes means blood sugar stays too high — often linked to weight, diet and inactivity. Many people ar…
Read more →Irritable bowel syndrome (IBS)
IBS causes recurring tummy pain, bloating and bowel habit changes — often triggered by stress, diet or gut sen…
Read more →Iron deficiency anaemia
Low iron causes tiredness, breathlessness and pale skin — common in menstruating women and after blood loss. N…
Read more →Vitamin B12 deficiency
Low B12 causes fatigue, pins and needles and low mood — common in older adults, vegans and people with absorpt…
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