Let me break this down in terms anyone can understand:
Picture the psoriasis on your skin as a house fire.
The flames are visible — the angry red patches, the thick silvery scales, the cracking, the bleeding. That's what you see. That's what everyone sees.
But the fire didn't start on the walls. It started in the electrical system — deep inside the house, behind the walls, where you can't see it and where no amount of painting will fix it.
Here's what's actually happening inside your body:
Your immune system has a switch. In healthy people, it's in the "OFF" position. But in psoriasis, this switch — specifically the IL-23/Th17 immune axis — is stuck permanently in the "ON" position.
When this switch is ON, it sends a massive false alarm to your skin cells: "MULTIPLY! FASTER! NOW!"
Normal skin cells take 28-30 days to mature, rise to the surface, and shed. Your skin cells?
They're being forced to do this in 3 to 5 days.
They pile up. Layer upon layer upon layer. Too fast to form a proper barrier. Too fast to hold moisture. Too fast to look like normal skin.
That's your plaque. That thick, silvery-white, concrete-like buildup. It's not "dead skin" that needs to be scrubbed off. It's your own skin cells being forced to multiply at 10x normal speed by an immune system that's gone haywire.
And the barrier beneath those plaques? It's shattered.
The essential lipids — specifically ceramides and filaggrin proteins — that normally hold your skin together like mortar between bricks? They're being destroyed faster than your body can produce them. That's why your skin cracks. That's why it bleeds. That's why it splits open at your knuckles and elbows like the ground during a drought.
Now here's the part that should make you furious:
When you rub a topical steroid onto those plaques, it does ONE thing: it violently forces your local immune cells to go to sleep. Temporarily.
But it doesn't touch the internal switch.
Over time, your skin builds a tolerance. Doctors call this tachyphylaxis. The steroid stops working. You need a stronger one. Then a stronger one.
And worse — the steroid is literally eating your collagen. Making your skin paper-thin. Translucent. Fragile.
The second you stop using the cream — and you will, because you have to — the blood vessels snap open. The inflammation that was being artificially suppressed comes FLOODING back into that dangerously thin skin.
This causes a violently explosive breakout — often much worse than before you started the cream.
Your dermatologist calls this a "rebound flare."
Claire called it "like pouring gasoline on a fire."
This is the "Topical Trap":
Trying to rub a cream onto a psoriasis plaque is exactly like trying to put out a house fire by painting the walls.
It might cover up the smoke damage for a few days. But the fire is still raging inside. And every day the fire burns, it destroys more of the structural foundation — more ceramides, more filaggrin, more of the barrier your skin needs to hold itself together.
Here's what the science now confirms:
1. Psoriasis is an INTERNAL immune misfire — not a surface-level skin problem.
The IL-23/Th17 axis is sending the "grow too fast" command from INSIDE your bloodstream. No cream, lotion, or shampoo sitting on the OUTSIDE of your skin can reach it. They are, by design, incapable of addressing the cause.
2. Topical steroids don't fix the immune switch — they just suppress surface symptoms temporarily.
Steroids shut down the local immune cells at the surface. But the internal switch stays ON. The moment you stop, the signal fires again — into skin that the steroid has made thinner, weaker, and more vulnerable. The rebound is inevitable. It's not a side effect. It's the design.
3. "Psoriasis repair" creams and soaps sit on top — they don't reach the immune system.
That $25 tube of "repair" paste? It sits on the outermost layer of your epidermis. The immune misfire driving your plaques is happening in your dermis and bloodstream — layers the cream physically cannot penetrate. Your skin barrier is shattered. Putting lotion on a shattered barrier is like putting a Band-Aid on a broken pipe.
4. The immune switch doesn't turn itself off — it's stuck in a chronic loop.
Without intervention at the systemic level — meaning through your bloodstream, not on your skin surface — the IL-23/Th17 axis will continue forcing your skin to overproduce. The plaques will keep building. The barrier will keep shattering. The cracking, bleeding, and flaking will continue until the switch is addressed at its source.
