# Fitzpatrick Skin Phototypes

> Fitzpatrick skin phototypes for NEET-PG Dermatology, covering types I to VI, minimal erythema dose and how phototype guides phototherapy, sunscreen and lasers.

- Canonical URL: https://prepelephant.com/topics/neet-pg/dermatology/fitzpatrick-skin-phototypes
- Exam / course: NEET-PG · Subject: Dermatology
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-14
- Last updated: 2026-10-14
- Reference basis: Rook's Textbook of Dermatology; Fitzpatrick's Dermatology; Andrews' Diseases of the Skin
- How to cite: "Fitzpatrick Skin Phototypes", PrepElephant, https://prepelephant.com/topics/neet-pg/dermatology/fitzpatrick-skin-phototypes

## Direct answer

Fitzpatrick skin phototypes are a six-level classification of how skin responds to sunlight, based on the tendency to burn and to tan after ultraviolet exposure. Type I always burns and never tans, while type VI never burns and is deeply pigmented. The phototype helps set the minimal erythema dose, the starting dose for phototherapy, sunscreen advice and laser settings.

## What you must remember

- **Type I:** always burns and never tans; fair skin, often with red or blond hair and freckles.
- **Type II:** burns easily and tans minimally; fair skin.
- **Type III:** burns moderately and tans gradually.
- **Type IV:** burns minimally and tans well, typical of Mediterranean and some Middle Eastern skin.
- **Type V:** rarely burns and tans very easily; Indian skin is commonly placed in types IV and V.
- **Type VI:** never burns, and the skin is deeply pigmented.
- **Minimal erythema dose:** the lowest ultraviolet dose that produces visible erythema, which is lower in types I and II.
- **Practical use:** the phototype guides phototherapy and PUVA starting doses, sunscreen advice and laser settings.

## How the phototype changes the sun response

Phototype is a clinical estimate built from the history of sun exposure and the skin's response to it, and it is then used to set doses and settings. Read the table for the response of each type before deciding on treatment.

| Phototype | Sunburn response | Tanning response |
|---|---|---|
| I | always burns | never tans |
| II | burns easily | tans minimally |
| III | burns moderately | tans gradually |
| IV | burns minimally | tans well |
| V | rarely burns | tans very easily |
| VI | never burns | deeply pigmented skin |

Lower types have less melanin and a lower minimal erythema dose, so they need more caution with ultraviolet therapy and with sunlight. Higher types have more melanin, which protects against burning but makes them prone to post-inflammatory hyperpigmentation after injury or laser treatment. Phototype therefore guides both the dose of therapy and the risk of pigmentary complications.

When the phototype is uncertain, record the history of sunburn in childhood and the response to a day of sun exposure. Writing this down keeps the dose and the laser settings consistent from one visit to the next.

## Where phototype questions catch candidates

Phototype questions are straightforward, but they test how the classification changes management.

- **Trap:** assuming types V and VI need no sun protection — **Correct:** darker skin still benefits from sunscreen, since sun exposure can worsen pigmentary disorders and photoageing, although the skin cancer risk is lower.
- **Trap:** starting PUVA at the same dose for every phototype — **Correct:** types I and II have a lower minimal erythema dose and need lower starting doses to avoid burns.
- **Trap:** using the same laser settings for all skin types — **Correct:** darker skin needs lower fluence and longer wavelengths to reduce the risk of post-inflammatory hyperpigmentation and burns.

## Frequently asked questions

### Which Fitzpatrick skin type never burns in the sun?

Fitzpatrick skin type VI never burns, and it is deeply pigmented, giving it strong natural protection against ultraviolet injury. Type V rarely burns, but it is still more prone to pigmentary changes than the lighter types.

### What is minimal erythema dose and why does it matter for phototherapy?

The minimal erythema dose is the lowest ultraviolet dose that produces visible redness of the skin. It is lower in Fitzpatrick types I and II, so phototherapy starts at a lower dose in these patients to avoid excessive burning.

### Which Fitzpatrick skin types are commonly seen in Indian patients?

Indian skin is commonly placed in Fitzpatrick types IV and V, although there is wide variation between individuals and regions. Phototype is best assessed from the history and the skin's response rather than from skin colour alone.

### Why are laser settings changed for darker Fitzpatrick skin types?

Laser settings are changed for darker skin because high-melanin skin absorbs more energy, raising the risk of burns and post-inflammatory hyperpigmentation. Lower fluence and longer wavelengths, such as the 1064 nm Nd:YAG laser, are commonly chosen to reduce these risks.

### How does phototype guide the starting dose of PUVA?

Phototype guides the starting dose of PUVA because the minimal erythema dose differs between skin types. Patients with types I and II start at lower doses than darker types, and the dose is then increased gradually according to the skin's response.