Psoriasis is a chronic, immune-mediated inflammatory skin condition that affects approximately 2-3% of the global population. It is characterised by well-defined, red or pink plaques covered with silvery-white scales, most commonly appearing on the elbows, knees, scalp, and lower back. While there is currently no cure, modern treatments can effectively manage symptoms and significantly improve quality of life.
Understanding Psoriasis: What Happens in the Skin?
In healthy skin, new skin cells are produced deep in the epidermis and gradually migrate to the surface over about 28-30 days. In psoriasis, the immune system mistakenly attacks healthy skin cells, accelerating the cell turnover process to just 3-5 days. This rapid production causes cells to pile up on the surface, forming the characteristic thick, scaly patches known as plaques.
Common Types of Psoriasis
- Plaque psoriasis (Psoriasis vulgaris) — The most common form, accounting for about 80-90% of cases. Presents as raised, red patches covered with thick silvery scales.
- Guttate psoriasis — Small, drop-shaped lesions that often appear after a streptococcal throat infection. More common in children and young adults.
- Inverse psoriasis — Smooth, red patches that develop in skin folds such as the armpits, groin, and under the breasts.
- Pustular psoriasis — White, pus-filled blisters surrounded by red skin. Can be localised to the hands and feet or generalised.
- Erythrodermic psoriasis — A rare but serious form that causes widespread redness and shedding of the skin across most of the body. Requires immediate medical attention.
Triggers and Risk Factors
While the exact cause of psoriasis involves a complex interplay of genetic and environmental factors, several known triggers can initiate or worsen flare-ups:
- Stress — Emotional and physical stress are among the most common triggers for psoriasis flares.
- Infections — Streptococcal throat infections, skin infections, and respiratory infections can trigger or aggravate psoriasis.
- Skin injury — Cuts, scrapes, sunburn, or insect bites can cause new psoriasis patches to appear at the site of injury (Koebner phenomenon).
- Medications — Certain drugs, including lithium, beta-blockers, antimalarials, and rapid withdrawal of corticosteroids, can trigger flares.
- Weather — Cold, dry weather tends to worsen symptoms, while moderate sunlight exposure may help improve them.
- Alcohol and smoking — Both are associated with more severe psoriasis and reduced treatment response.
Treatment Approaches
Psoriasis treatment depends on the severity, type, and location of the condition, as well as the patient's overall health and preferences. A step-wise approach is commonly used:
- Topical therapies — Corticosteroids, vitamin D analogues (calcipotriol), calcineurin inhibitors, coal tar preparations, and salicylic acid are the first-line treatment for mild to moderate psoriasis.
- Phototherapy — Narrowband UVB phototherapy is highly effective for moderate to severe psoriasis. It involves controlled exposure to ultraviolet light under medical supervision.
- Systemic medications — Methotrexate, cyclosporine, and acitretin are used for moderate to severe cases that do not respond to topical treatments or phototherapy.
- Biologic therapies — Targeted immunomodulators such as TNF-alpha inhibitors, IL-17 inhibitors, and IL-23 inhibitors represent the latest advances in psoriasis treatment, offering high efficacy with a favourable safety profile.
Living with Psoriasis: Self-Care Tips
- Moisturise regularly — Apply a thick, fragrance-free emollient immediately after bathing to lock in moisture and reduce scaling.
- Identify and avoid your triggers — Keep a diary to track flare-ups and identify patterns related to stress, diet, weather, or other factors.
- Protect your skin — Avoid scratching, picking, or scrubbing affected areas. Use gentle, soap-free cleansers.
- Get moderate sun exposure — Brief, controlled sunlight exposure can help, but avoid sunburn which can trigger the Koebner phenomenon.
- Manage stress — Practise meditation, yoga, deep breathing, or other relaxation techniques.
- Maintain a healthy weight — Obesity is associated with more severe psoriasis and reduced treatment response.
- Limit alcohol and quit smoking — Both can worsen symptoms and interfere with treatment effectiveness.
Psoriasis and Associated Conditions
Psoriasis is more than a skin condition — it is associated with several comorbidities including psoriatic arthritis (joint inflammation), cardiovascular disease, metabolic syndrome, diabetes, and depression. Regular monitoring and a holistic approach to care are essential.
Expert Psoriasis Care in Pune
At DermcareMD Skin & Hair Clinic in Kothrud, Pune, Dr. Neha Athalye provides thorough evaluation and personalised management plans for psoriasis patients. With expertise in dermoscopy and clinical dermatology, she helps patients understand their condition, identify triggers, and achieve better control of their symptoms. If you are living with psoriasis and looking for expert care, schedule a consultation today.
