Psoriasis is one of the most commonly misdiagnosed skin conditions in Nairobi, and the reason is straightforward: on darker skin it does not look like the textbook pictures. Instead of bright red plaques with silvery scale, it often shows up violet, grey or dark brown, with thicker scale, and it gets treated as eczema or a fungal infection for years before anyone reaches the right answer.
What psoriasis actually is
Psoriasis is an immune-driven condition in which skin cells are produced far faster than they are shed. The result is a build-up of thickened, scaly plaques, most often on the elbows, knees, scalp and lower back.
Three things are worth saying plainly, because patients are frequently told otherwise. It is not contagious. It is not caused by poor hygiene. And it is not something you brought on yourself.
The forms we see most
- Plaque psoriasis – the common form, with well-defined thickened patches.
- Scalp psoriasis – often mistaken for stubborn dandruff, and a frequent reason people first come in.
- Nail psoriasis – pitting, thickening and lifting of the nail, easily confused with fungal nail infection and treated wrongly for months.
- Guttate psoriasis – a sudden shower of small spots, often after a throat infection.
- Inverse psoriasis – in the folds, where it looks smooth and shiny rather than scaly.
What sets it off
Flares rarely come from nowhere. Common triggers include infection, physical stress on the skin such as a cut or a scratch, emotional stress, certain medicines, alcohol and smoking. Part of the consultation is working out which of these applies to you, because avoiding a trigger is cheaper and more effective than treating the flare it causes.
How psoriasis is treated
Treatment is chosen for the type, the extent and the sites involved, and it steps up only as far as it needs to:
- Topical therapy – prescription steroids, vitamin D analogues, and preparations to lift thick scale so the active treatment can actually reach the skin.
- Scalp-specific treatment – formulations that work in hair rather than sitting on it.
- Intralesional injection for a few stubborn, thickened plaques – see intralesional steroid injections.
- Systemic treatment where disease is widespread or severely affecting daily life, with the appropriate monitoring.
Where the diagnosis is genuinely uncertain, a skin biopsy settles it, and it is done here in the clinic.
Living with a long-term condition
Psoriasis is controlled rather than cured, and the single biggest predictor of how well someone does is whether they stay on some form of maintenance. Skin that looks clear is often still active underneath, which is exactly the moment people stop.
It is also worth knowing that psoriasis is more than skin. Joint pain and stiffness should be mentioned, because psoriatic arthritis is easier to protect against than to repair. Blood pressure, weight and cholesterol are worth keeping an eye on too.
Psoriasis or something else?
Psoriasis is misdiagnosed for years more often than almost any other skin condition, and on darker skin that delay is longer still. These are the conditions it gets confused with, and what separates them.
| Often mistaken for | What points to psoriasis instead |
|---|---|
| Eczema | Sharply defined edges rather than blurred; thicker scale; classic sites at elbows, knees and lower back |
| Ringworm | Symmetrical on both sides of the body; a scraping comes back negative for fungus |
| Dandruff | Scale extends past the hairline onto the forehead, ears or neck; plaques are thicker and well demarcated |
| Fungal nail infection | Pitting of the nail surface, and skin plaques elsewhere; nail clippings negative for fungus |
| Steroid-modified rash | History of combination cream use, and the rash worsening each time the cream stops |
Scalp psoriasis, in practical terms
The scalp is the commonest site people first notice, and it is where most self-treatment goes wrong. Ordinary anti-dandruff shampoo is not designed to lift thick adherent scale, and scrubbing at plaques makes them worse – psoriasis reliably appears wherever skin is injured.
What actually works is unglamorous and sequential:
- Soften and lift the scale first. Active treatment cannot reach skin buried under it.
- Use a formulation designed for hair – lotions, gels and foams reach the scalp; thick creams sit on the hair.
- Apply to the scalp, not the hair. Part the hair in sections and target the skin.
- Leave it on for the time you were told. Contact time is doing the work.
- Do not pick. It is the hardest instruction on this list and the most important.
Hair loss from scalp psoriasis is usually temporary and recovers once inflammation settles – unlike scarring conditions such as lichen planus of the scalp, which is one reason getting the diagnosis right matters.
What to expect from treatment, honestly
Psoriasis is a long-term condition managed in phases rather than fixed in one appointment:
| Phase | Aim | Rough timescale |
|---|---|---|
| Clearing | Settle active plaques and stop the itch | Several weeks of consistent treatment |
| Stepping down | Reduce gradually rather than stopping dead | Weeks, guided by how the skin responds |
| Maintenance | Keep it quiet with the minimum needed | Ongoing, reviewed periodically |
| Fading marks | Post-inflammatory pigment settles | Months, and slower on darker skin |
The commonest reason psoriasis “stops responding” is that treatment was stopped abruptly the moment the skin looked clear. Skin that looks normal is often still inflamed underneath.
A checklist for your appointment
- Every cream and shampoo you have tried, including anything from a chemist or relative – the containers, not the names
- Photographs of the skin at its worst
- Any joint pain, stiffness or swelling, especially first thing in the morning
- Recent infections, particularly sore throats, which can trigger a flare
- All medicines you take, since a few can aggravate psoriasis
- Whether it affects your sleep, work or confidence – this genuinely changes how firmly we treat
Psoriasis and everyday life
Most of what determines whether psoriasis is manageable happens between appointments, and a handful of ordinary decisions make a disproportionate difference.
Washing. Long hot showers feel wonderful on scaly skin and leave it drier and itchier afterwards. Keep it short and warm, use a plain non-foaming cleanser rather than antiseptic bars, and moisturise while the skin is still slightly damp. Emollient is not a cosmetic here – it reduces scale, reduces itch, and makes prescription treatment work better.
Clothing and friction. Psoriasis appears where skin is injured, so tight waistbands, backpack straps and rough seams can each seed a new plaque. Loose cotton over affected areas is a small change with a real payoff.
Swimming and the gym. Both are fine and neither is a risk to anyone else – psoriasis is not contagious and nobody can catch it from a pool or a bench. Chlorine can dry the skin, so rinse and moisturise afterwards. If anyone questions it, the plain fact that it is an immune condition rather than an infection usually settles the matter.
Alcohol and smoking. Both are associated with more severe disease and with treatment working less well. This is not a lecture, just an honest part of the picture worth knowing.
Cost. Psoriasis needs ongoing treatment, and a plan you cannot sustain is not a good plan however well it works on paper. Say what is realistic for you and the plan gets built around it – most medical dermatology is covered by insurance, and reception quotes fees before you attend.
When to come back sooner
- A sudden widespread eruption of small spots, especially after a sore throat
- Skin becoming widely red, hot and shedding, with feeling unwell – this needs urgent assessment
- New joint pain, swelling or morning stiffness
- Plaques becoming painful, cracked or weeping, which can signal secondary infection
- Treatment that stopped helping, before you abandon it altogether
Psoriasis treatment in Nairobi – common questions
Is psoriasis contagious?
No. Psoriasis cannot be passed to anyone by touch, sharing a towel or swimming in the same water. It is an immune condition, not an infection, and nothing you did caused it.
Can psoriasis be cured?
It cannot be cured, but it can be controlled well enough that most people are clear or nearly clear most of the time. The plan is built around keeping it that way rather than only reacting to flares.
Why does my psoriasis look brown or grey rather than red?
On melanin-rich skin psoriasis often appears violet, grey or dark brown instead of red, and the scale can be thicker. This is one reason it is misdiagnosed for years, and it is worth having looked at by someone who sees it regularly.
My joints ache. Is that related?
It can be. A proportion of people with psoriasis develop joint inflammation, and picking it up early matters because joint damage does not reverse. Mention any stiffness or swelling at your appointment.
Will the dark marks left behind fade?
Usually yes, though slowly. Pigment left after a plaque clears can take many months to settle on darker skin, and sun protection helps it fade more evenly.
Do I need to stay on treatment when my skin is clear?
Most people do need some form of maintenance. Stopping everything the moment the skin looks good is the commonest reason psoriasis comes straight back.
Related conditions and treatments
Psoriasis is regularly confused with eczema and with fungal skin infections, which need entirely different treatment – one more reason to get the diagnosis settled first.
Can stress really cause a flare?
Stress does not cause psoriasis, but it is one of the better-recognised triggers for a flare in someone who already has it. That is worth knowing without becoming another thing to feel guilty about – the treatment plan still does the heavy lifting.
Is sunlight good for psoriasis?
Moderate natural light helps many people, which is why phototherapy exists. Sunburn does the opposite and can trigger a flare through skin injury, so the useful version is short and sensible exposure, not sunbathing.
Can I dye or relax my hair with scalp psoriasis?
Not during an active flare, when the scalp is broken or inflamed – chemical processing on inflamed skin stings badly and can worsen things. Once it is settled and the scalp is intact, most people manage normally.
Does psoriasis affect anything besides skin?
It can. Joint inflammation is the main one to watch for, and it is easier to protect joints than to repair them. Psoriasis is also associated with cardiovascular and metabolic risk, so blood pressure, weight and cholesterol are worth keeping an eye on.
Book psoriasis treatment in Nairobi
Dr Nancy Omwenga sees patients at Landmark Plaza, Argwings Kodhek Rd, from 7:00am on weekdays and 7:00am to 12:00pm on Saturdays. Bring anything you have already used, including creams from the chemist.
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Same-day appointments and walk-ins where available. Most medical insurance schemes accepted, plus cash, card and M-Pesa.
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SkinByDrNancy
Landmark Plaza, 2nd Floor, Argwings Kodhek Rd, Nairobi
Mon – Fri 7:00am – 6:30pm
Sat 7:00am – 12:00pm
Sunday closed
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