1. Physiological (Normal) Phimosis:
o This is the type of phimosis that is common in newborns and young children. In the early stages of life, the foreskin is usually non-retractable because it is attached to the glans by a layer of tissue. As the child grows, the foreskin typically becomes more elastic and separates from the glans, allowing it to be pulled back. Most children outgrow physiological phimosis by the age of 3 to 5 years, though it can persist in some cases.
2. Pathological Phimosis:
o This occurs when the foreskin becomes tight due to scarring or other pathological causes, making it difficult or impossible to retract even in adulthood. Pathological phimosis may be associated with:
 Infections: Chronic infections, including balanitis (inflammation of the glans) or repeated episodes of balanoposthitis (inflammation of the glans and foreskin), can cause scarring that leads to tightness of the foreskin.
 Trauma: Physical injury or repeated forcible retraction of the foreskin can result in scarring or fibrosis.
 Poor hygiene: Inadequate cleaning under the foreskin can lead to infections or accumulation of smegma (a combination of dead skin cells and oils), increasing the risk of developing phimosis.
 Skin Conditions: Conditions like eczema, psoriasis, or lichen sclerosus can cause the skin of the foreskin to become thickened, inflamed, and scarred, leading to phimosis.

1. Congenital (Present from birth):
o Many infants are born with a foreskin that is not yet retractable, and this is considered normal. Over time, as the child grows, the foreskin becomes more pliable, and retraction usually becomes possible. This process may take several years.
2. Acquired (Develops later in life):
o Chronic Infections: Recurrent infections of the glans or foreskin (balanitis) can lead to scarring of the foreskin and the development of phimosis. These infections may be bacterial or fungal in nature.
o Inflammatory Skin Conditions: Conditions like eczema, psoriasis, or lichen sclerosus can lead to thickening and tightening of the foreskin.
o Poor Hygiene: Inadequate cleaning can result in smegma buildup, which, in turn, can lead to irritation and scarring of the foreskin.
o Trauma or Injury: Repeated trauma to the area or forcible retraction of the foreskin can lead to scarring and phimosis.
3. Age-Related Changes:
o As men age, the skin of the foreskin can lose its elasticity, leading to a gradual development of phimosis, especially in men who have not been circumcised.

The primary symptom of phimosis is the inability to retract the foreskin over the glans. However, there are other associated symptoms depending on whether the condition is causing further complications:
1. Difficulty Retracting the Foreskin:
o The main symptom of phimosis is that the foreskin cannot be pulled back over the glans, either partially or fully.
2. Pain or Discomfort:
o Pain during urination or sexual activity due to the tight foreskin.
o Swelling, redness, or tenderness of the foreskin or glans, especially if infection is present.
3. Swelling or Bleeding:
o Paraphimosis: This is a potential complication where the foreskin is retracted but becomes trapped behind the glans, causing swelling and restricting blood flow. This is a medical emergency that requires immediate treatment.
4. Difficulty with Hygiene:
o In severe cases, an inability to retract the foreskin may lead to difficulty cleaning under the foreskin, increasing the risk of infections and buildup of smegma.
5. Infections or Inflammation:
o Balanitis: Inflammation of the glans, often due to infection, may occur. Symptoms of balanitis include redness, swelling, discharge, and pain.
o Recurrent Infections: Repeated infections under the foreskin can occur if the phimosis prevents proper hygiene.

Phimosis is typically diagnosed through a physical examination of the penis. The healthcare provider will:
1. Visual Inspection: The doctor will observe the appearance of the foreskin, glans, and any potential signs of infection or scarring.
2. Assess the Retractability of the Foreskin: The doctor will determine if the foreskin can be retracted (in cases of congenital or pathological phimosis).
3. Check for Inflammation or Infection: The presence of redness, discharge, or swelling may suggest infection (e.g., balanitis).
4. Rule out Underlying Conditions: If phimosis is suspected to be related to skin conditions like eczema or lichen sclerosus, additional diagnostic tests may be required.
In some cases, an ultrasound or biopsy may be needed to further investigate the cause, especially if scarring or skin changes are suspected.