Thick, Pitted Nails
Plaque psoriasis often happens along with nail psoriasis. You may notice that your fingernails look pitted and abnormally thick [11] in size. The nails may look discolored and raised, as though they have been separated from the nail bed.
Swollen Joints
Plaque psoriasis often precedes a condition known as psoriatic arthritis. Psoriatic arthritis is a chronic condition that affects the joints. It makes the joints inflamed, swollen, and painful. Psoriatic arthritis results in damage to the joints and can gradually become a disabling condition if not managed properly. Sometimes this condition precedes psoriasis.
If you develop painful, swollen joints [12] not caused by injury or other forms of arthritis, you may also have both plaque psoriasis and psoriatic arthritis. You should see a doctor as soon as you can.
Conclusion
If you have psoriasis, it is most likely plaque psoriasis. Plaque psoriasis accounts for up to 80 percent of psoriasis cases. The symptoms of plaque psoriasis are easy to recognize during flares. Not everyone experiences all the common symptoms of the condition. If you notice plaques on your skin, you should see a doctor to confirm if plaque psoriasis is the cause. Treatments can help control the condition but they cannot cure you of it.
References:
[1] https://www.psoriasis.org/about-psoriasis/
[2] https://www.psoriasis.org/about-psoriasis/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3061343/
[4] https://www.psoriasis.org/plaque/
[5] https://www.psoriasis.org/plaque/
[6] https://www.psoriasis.org/plaque/
[7] https://www.healthline.com/health/psoriasis
[8] https://www.healthline.com/health/psoriasis
[9] https://www.healthline.com/health/psoriasis
[10] https://www.healthline.com/health/psoriasis
[11] https://www.psoriasis.org/plaque/
[12] https://www.healthline.com/health/psoriasis