What Causes It?
Genetics: Family history increases risk
Immune system dysfunction: Triggers inflammation and skin cell overproduction
Environmental factors: Cold weather, dry air
Infections: Like strep throat can trigger guttate psoriasis
Stress: Can worsen flare-ups
Skin injuries: Cuts, burns, or insect bites (Koebner phenomenon)
Certain medications: Lithium, beta-blockers, and antimalarials
Smoking and heavy alcohol use
Signs & Symptoms
Red patches of skin with thick, silvery scales (plaque psoriasis)
Itching, burning, or soreness
Dry, cracked skin that may bleed
Thickened or ridged nails (nail psoriasis)
Stiff, swollen joints (psoriatic arthritis)
Scalp flaking (often mistaken for dandruff)