Medical Dermatology

To schedule an appointment with Pantea Hashemi, MD, or for more information on treatments, please call us at (916) 571-5200 or request an appointment online by emailing us.


There are many reasons why acne occurs. The underlying problem is the clogging of sebaceous glands attached to hair follices underneath the skin surface with sebum, a type of oil normally produced to maintain healthy skin. This sebum serves as “food’” for bacteria resulting in inflammation which manifests as pimples and cysts on the surface of the skin anywhere there are follicles such as the face, back, and chest. Hormones also play a role in acne by increasing the production of oil in the skin. Successful treatment requires defenses against the clogged sebaceous glands, bacteria, and excess oil production. These treatments may be in the form of topical and/or oral medications as well as, laser and light treatments.

Bullous Diseases​

The Bullous diseases are uncommon chronic skin disorders caused by autoantibodies directed against various cutaneous proteins. These disorders primarily occur in older adults and can cause significant discomfort in affected patients and can even be fatal in the case of pemphigus. Patients with immunobullous diseases often have significant quality of life issues in questions pertaining to physical, emotional, and mental health. Skin biopsies for routine histology and immunofluorescence are needed to confirm the diagnosis.


Nearly everyone has a pigmented spot on their body or face that is present from birth. They can range from barely noticeable to disfiguring, and can cause a person to feel shy or self-conscious. In addition, some birthmarks can be linked to more serious medical conditions. USI offers leading edge birthmark treatment and birthmark removal services.There are two main categories of birthmarks. The first is a vascular birthmark. These red marks are caused by a malformation of blood vessels and appear when the underlying blood vessels are either too wide or too numerous. They have several different visual characteristics.


Eczema is often used as an umbrella term for dermatitis, or inflammation of the skin. There are many different kinds of eczema and sometimes the cause is unknown. The common finding is red, inflamed, scaly and itchy skin. Atopic dermatitis is the most common form, has a genetic component, and is associated with asthma and allergies. It usually starts in childhood but can occur in all ages. Other forms of dermatitis include dyshidrotic eczema which affects the hands and feet and contact dermatitis which occurs due to exposure to a particular allergen.

Hair Loss

Hair loss, or alopecia, affects many people of all ages. For some, hair loss is hereditary and occurs as a natural part of aging. In others, hair loss may be a sign of an underlying medical condition. USI have the experience to distinguish the various patterns of hair loss and identify the cause. Diagnosing different types of hair loss by clinical examination, biopsy, and advanced techniques and devices, such as computerized measurement tools, that provide detailed information about the health of your scalp and hair. Offering individualized care and emotional support to help you feel comfortable with the way you look.

Mole Check​​

There are many different kinds of moles which can appear to be flat, raised, brown, black, pink, or flesh colored. Few people are born with moles while the majority develop moles during childhood and adolescence. Lighter skin typed individuals are more prone to developing moles than those that are darker skinned. Moles may change over time in size and color as a result of environmental factors such as sun exposure and hormones, as in pregnancy. While most moles are harmless, some may have a tendency to become irregular in shape, color and size. These are known as atypical or dysplastic moles. Dysplastic moles may herald an increased risk of the deadliest form of skin cancer known as melanoma. Surgical excision may be required to remove these moles. It is important to have an annual total body skin examination to see if you have any irregular moles that may needed to be removed.


Psoriasis is an inflammatory skin disease characterized by scaly red plaques most commonly on the elbows, knees, scalp and lower back. It can also affect the nails and the joints, leading to psoriatic arthritis. Treatment involves topical medications, though injections, light therapy, and/or oral medications may be required.


Rosacea is a common chronic skin condition which appears as redness, flushing, broken blood vessels and even bumps that look like acne. It occurs on the central portion of the face but can also occur around the eyes, mouth and forehead. Specific triggers can often worsen rosacea such as sun exposure, hot or cold beverages, spicy foods, alcohol and even certain skin care products. A cornerstone of rosacea management involves sunscreen with physical blockers and non-irritating skin care products. Most patients also require topical and even oral medications to control their symptoms. Additionally, lasers and light based treatments play a pivotal role in the treatment of rosacea by addressing broken blood vessels and generalized redness that can occur when the condition is uncontrolled. Several treatments, typically two to three, are often required. Because rosacea is a chronic condition, new blood vessels will likely develop requiring additional treatments.

Skin Cancer

Did you know that approximately five million people are diagnosed with skin cancer every year in the United States. An annual skin screening with a board-certified dermatologist will help improve your prognosis. If treated early, skin cancer is 100% curable, when left untreated for too long it can affect other areas inside your body and become fatal. If you notice any new moles or any changes to existing moles on your skin, it’s imperative to make an appointment for a screening immediately.


Skin rashes are the body’s reaction to specific irritants that have either come in contact with the skin or have be ingested into the body. A rash is not a specific diagnosis, but a symptom that means that the skin has become inflamed, discolored, and has undergone a change in the way it looks. Rashes can be extremely itchy, uncomfortable, unsightly, and just plain irritating. Getting to the root cause of the rash is incredibly important, which is why Pantea Hashemi, MD, is dedicated to treating more than just the symptoms of a rash, to provide patients with the most effective and personalized treatment for long-term relief.