The most common type of psoriasis, accounting for approximately 80-90% of cases, is known as:

Explanation: Plaque psoriasis is the most common type of psoriasis, accounting for approximately 80-90% of all cases. It is characterized by the presence of raised, well-defined, erythematous (red) plaques with silvery-white scales.

Incorrect choices: a. Guttate psoriasis: Guttate psoriasis is characterized by small, teardrop-shaped lesions scattered on the skin, often following a streptococcal infection. It is less common than plaque psoriasis.

b. Inverse psoriasis: Inverse psoriasis affects skin folds, such as the armpits, groin, and under the breasts. It appears as smooth, red patches and is less common than plaque psoriasis.

d. Pustular psoriasis: Pustular psoriasis is a specific subtype characterized by pustules on the skin, but it is less common than plaque psoriasis.

Explanation: Immunosuppressive medications can weaken the immune system, making the patient more susceptible to infections. It is important for the patient to promptly report any signs of infection or illness to their healthcare provider for appropriate management.

Incorrect choices: b. The administration of immunosuppressive medications is often specific to each medication and should be taken as prescribed by the healthcare provider, with or without food, as indicated.

c. Immunosuppressive medications can increase the risk of infections, but they do not directly increase the risk of sunburn. Patients should, however, be cautious about sun exposure due to potential skin sensitivity.

d. Discontinuing immunosuppressive medications abruptly can be dangerous and should only be done under the guidance of a healthcare provider. Sudden discontinuation can lead to worsening of psoriasis and potential rebound effects.