This type is the least common, but it's very serious. It affects most of your body and causes widespread, fiery skin that appears burned. You might also have:
- Severe itching, burning, or peeling
- A faster heart rate
- Changes in body temperature
If you have these symptoms, see your doctor right away. You may need to get treated in a hospital. This type of psoriasis can cause severe illness from protein and fluid loss. You may also develop an infection, pneumonia, or congestive heart failure.
- Suddenly stopping your systemic psoriasis treatment
- An allergic drug reaction
- Severe sunburn
- Medications such as lithium, anti-malarial drugs, cortisone, or strong coal tar products
Erythrodermic psoriasis may also happen if your psoriasis is hard to control.
Up to half of those with psoriasis have nail changes. This is even more common in people who have psoriatic arthritis, which affects your joints.
Common symptoms include:
- Pitting of your nails
- Tender, painful nails
- Separation of the nail from the bed
- Color changes (yellow-brown)
- Chalk-like material under your nails
You're also more likely to also have a fungal infection.
This is a condition where you have both psoriasis and arthritis (joint inflammation). In 70% of cases, people have psoriasis for about 10 years before developing psoriatic arthritis. About 90% of people with it also have nail changes. The most common symptoms are:
- Painful, stiff joints that are worse in the morning and after rest
- Sausage-like swelling of the fingers and toes
- Warm joints that may be discolored